LegoLEGO® Friends

Lego® Cat Birthday Party & Tree House

Name: Cat Birthday Party & Tree House 42666 | LEGO® Friends
Brand: Lego
SKU: 42666
Availability: InStock

Lowest price right now CHF 16.99 at alternate.de, 51% below RRP, 2 shops compared. Prices as of 12.11.2026, 13:43.

NewBest price32,99 CHFusual 33,39 CHF−1%Lowest price in 90 days@ Alternate DEincl. 16,00 CHF shipping UsedFind great used offers on eBay.

Alle 2 Angebote vergleichen →

Lego Cat Birthday Party & Tree House (42666) – Produktfoto freigestellt

Set #: 42666
Parts: 321
Minifigs: 2
Price/part: 5.3 ct
Release: 2025
Age: 6+

Price comparison · 2 Offers · final prices incl. shipping

Where is Cat Birthday Party & Tree House cheapest right now?

Shipping to Switzerland

2 shops checkedIndependently sorted

New

32,99CHFBEST PRICE

0,40 CHF below usual price

incl. 16,00 CHF shippingincl. VAT & customsfrom | 4 to 11 days

32,99 CHFNewincl. 16,00 CHF shipping · 4 to 11 days

New
51,14CHF
incl. 32,90 CHF shippingincl. estimated VAT & customsfrom | approx. 2 weeks.
51,14 CHFNewincl. 32,90 CHF shipping · approx. 2 weeks.

Price check · in short

What does Lego® Cat Birthday Party & Tree House (42666) currently cost?

On VERObricks, Lego® Cat Birthday Party & Tree House (Set No. 42666) is currently listed by 2 shops across 2 offers. The lowest new price in the VERObricks comparison is 32,99 CHF (alternate.de). Other new offers range up to 51,14 CHF. You currently save 1% (0,40 CHF) compared to the usual dealer price of 33,39 CHF. The manufacturer's RRP is 34,90 CHF. The current price per brick is 10,3 cents.

Notes on prices & affiliate links

Displayed prices may differ from actual offers. We update prices regularly, but offers on the linked pages may change quickly. Please note that we earn a commission on some qualified purchases made through partner links (e.g., from Amazon, eBay, or other shops). This only applies to links used within affiliate programs. There are no additional costs for you, and we also provide non-affiliate links to ensure a comprehensive overview of available offers.

Price history · Price development

Has Cat Birthday Party & Tree House ever been cheaper?

Current: 32,99 CHF; New, best shop
30-day low: 32,99 CHF; on 04. Nov. 2026 · alternate.de
Usual at dealers: 33,39 CHF; 90-day median, final price
All-time low: 32,79 CHF; on 10. Juli 2025 · alternate.de

Loading chart …

Last 30 price changes, newest first
Date	New	Shop
04. Nov. 2026	32,99 CHF	alternate.de
05. Okt. 2026	33,19 CHF	alternate.de
15. Sept. 2026	33,59 CHF	alternate.de
15. Aug. 2026	33,39 CHF	alternate.de
14. Aug. 2026	43,40 CHF	Lego.de
12. Aug. 2026	33,89 CHF	alternate.de
11. Aug. 2026	33,79 CHF	alternate.de
31. Juli 2026	33,29 CHF	alternate.de
30. Juli 2026	33,39 CHF	alternate.de
29. Juli 2026	33,49 CHF	alternate.de
28. Juli 2026	37,99 CHF	alternate.de
12. Juni 2026	33,29 CHF	alternate.de
08. Juni 2026	33,49 CHF	alternate.de
05. Juni 2026	43,40 CHF	Lego.de
03. Juni 2026	32,99 CHF	alternate.de
02. Juni 2026	43,40 CHF	Lego.de
01. Juni 2026	33,49 CHF	alternate.de
13. Mai 2026	43,40 CHF	Lego.de
30. März 2026	33,29 CHF	alternate.de
21. März 2026	43,40 CHF	Lego.de
18. Feb. 2026	32,99 CHF	alternate.de
20. Jan. 2026	33,29 CHF	alternate.de
09. Jan. 2026	33,49 CHF	alternate.de
06. Jan. 2026	33,29 CHF	alternate.de
01. Jan. 2026	43,40 CHF	Lego.de
30. Dez. 2025	33,79 CHF	alternate.de
29. Dez. 2025	35,29 CHF	alternate.de
25. Dez. 2025	35,99 CHF	alternate.de
24. Dez. 2025	43,40 CHF	Lego.de
23. Dez. 2025	33,79 CHF	alternate.de

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Details

Set details

At a glance

Brand: Lego
Partcount: 321
Minifigures: 2; 1 excl.
Age: 6+
Release / EOL: 2025 – 2026
RRP: 34,90 CHF
Price per Part: 5.3 ct; great value

Building instructionsPDF from the manufacturer

Technical data9 entries

Product

Name: Cat Birthday Party & Tree House

Dimensions

Product weight: 0.2 kg
Packaging width: 26.2 cm
Packaging height: 6.1 cm
Packaging length: 19.1 cm
Packaging weight: 0.5 kg

Identification

MFR: 42666
EAN: 57020177837585702017949581
SKU: 42666

DescriptionManufacturer text

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A creative toy building set filled with feline fun for girls, boys and cat-lovers aged 6 and up, with 2 minidolls and 5 cat figures.

It’s Churro the cat’s birthday and you’re invited to join the celebrations! Leo and Paisley are here too, plus 4 of Churro’s kitty friends, who have brought gifts for the birthday cat. The pets play in the cat tree house, where there’s a fish-shaped piñata, a cat toy, cat grass and a water fountain. Then the cats sit at the rotating table to enjoy Churro’s birthday cake. Happy birthday Churro!

A building kit for cat-loving kids – This LEGO® Friends Cat Birthday Party & Tree House toy for girls and boys aged 6 and up comes with 2 minidolls and 5 cat figures for imaginative play

Cat tree-house toy – Kids can have lots of fun playing with the 5 cats on the cat tree house, which features a fish-shaped piñata with treats inside, a cat toy, cat grass and a water fountain

Create stories with the LEGO® Friends characters – This pretend-play set comes with Leo and Paisley minidolls, 5 cat figures, a buildable cat tree house and a buildable birthday cake scene

Cat-themed accessories – Kids can create endless fun stories using the accessories, which include a birthday cake with candle, gifts, banners, cat-shaped balloons, a birthdayhat and cat treats

A gift for kids who love cats – This animal toy set makes a great creative gift for girls, boys and cat-lovers aged 6 and up or for anyone who would love to build a cat-themed birthday scene

Online show – Inspire more creative-play ideas with other sets (sold separately) and the LEGO® Friends: The Next Chapter online show, where kids can get to know the characters of Heartlake City

Let’s tell a friendship story – The LEGO® Friends range of building sets lets kids explore different friendship moments, with lots of opportunities to create their own imaginative stories
Measurements – 321-piece set with a main model measuring over 7 in. (18 cm) high, 6 in. (16 cm) wide and 4 in. (10 cm) deep

Minifigures

Which minifigures are in Cat Birthday Party & Tree House?

The set contains 2 minifigures, 1 of them exclusive to this set.

Paisley - Bright Light Yellow Top, Medium Lavender Skirtin 2 sets
Leo - Red Shirt, Yellow ShortsExclusive

Gallery

Product images (12)

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Looks similar

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FAQ

Frequently Asked Questions

Where can you buy Lego® Cat Birthday Party & Tree House?

New stock is available at alternate.de, brickmo (2 shops). VERObricks compares all prices in real time and always shows you the lowest offer — for new and used stock, with shipping cost comparison.

Was Cat Birthday Party & Tree House ever cheaper? Price history & all-time low

VERObricks tracks the price history of Lego® Cat Birthday Party & Tree House across all shops. The historical low for new is 32,79 CHF. The highest observed new price was 51,80 CHF — a range of 19,01 CHF. The current price of 32,99 CHF is at or near the historical low — a great time to buy. The price trend is currently downward — the price has fallen recently. With the VERObricks price alert you'll be notified instantly when the price reaches your target.

What is Lego® Cat Birthday Party & Tree House? Contents, parts & details

Lego® Cat Birthday Party & Tree House is a set by Lego from the "LEGO® Friends" theme (Set No. 42666, EAN: 5702017783758). According to the VERObricks database, the set includes 321 parts, 2 minifigures, Recommended age 6+. Manufacturer description: "A creative toy building set filled with feline fun for girls, boys and cat-lovers aged 6 and up, with 2 minidolls and 5 cat figures." On VERObricks you can find the set in these categories: LEGO® Friends, Animals, Holidays, Kids.

Which minifigures are included in Lego® Cat Birthday Party & Tree House?

According to the Rebrickable inventory, Lego® Cat Birthday Party & Tree House contains 2 minifigures: Paisley - Bright Light Yellow Top, Medium Lavender Skirt, Leo - Red Shirt, Yellow Shorts. 1 figure is exclusive to this set: Leo - Red Shirt, Yellow Shorts. Exclusive figures often keep a set's value stable after retirement; see the price history and used offers above.

When was Lego® Cat Birthday Party & Tree House released and how long will it stay available?

Lego® Cat Birthday Party & Tree House was released in June 2025. According to the manufacturer's planning, the set retires at the end of 2026 (EOL, end of life). While it is in regular stock, keep an eye on the price history; after retirement, new copies come from remaining stock only and prices often rise. The official building instructions are available as 2 PDF files directly from the manufacturer, linked in the set details section.

Is Cat Birthday Party & Tree House worth it at the current price?

At the current VERObricks best price of 32,99 CHF for 321 parts, that works out to 10,3 cents per part. The price per part is above average. This is typical for licensed sets, collector editions, or sets with many specialty parts. The current discount of 1% off the usual dealer price is moderate. On top of that: according to the VERObricks price history, the current price is at the historical all-time low.