Birthday Diorama
40584-1 Seasonal 2023 157 parts 1.8% repair risk Easy
Say 'Happy Birthday' in style with the LEGO Birthday Diorama (40584)! Craft a vibrant party scene, perfect for celebrating any LEGO fan's special day. This delightful diorama comes packed with festive details to bring the celebration to life. Discover colorful balloons, a lit candle, delicious-looking cakes, thoughtfully wrapped gifts, and clear 'Happy Birthday' signage. Once complete, this charming scene measures over 9 cm (3.5 in.) high, 8 cm (3 in.) wide, and 8 cm (3 in.) deep, making it a wonderful display piece for any festive occasion.
Parts Inventory
| Part | Qty | LEGO price each |
|---|---|---|
 Sticker Sheet for Set 40584-1 10102247 | 1× | Check price → View |
![Brick Round 2 x 2 Dome Bottom [Open Stud]](https://cdn.rebrickable.com/media/parts/elements/6132411.jpg) Brick Round 2 x 2 Dome Bottom [Open Stud] 15395 | 1× | €0,17 |
![Brick Round 2 x 2 Dome Bottom [Open Stud]](https://cdn.rebrickable.com/media/parts/elements/6214557.jpg) Brick Round 2 x 2 Dome Bottom [Open Stud] 15395 | 1× | €0,17 |
 Plate Round 1 x 1 Swirled Top 15470 | 4× | Check price → View |
 Brick Special 1 x 4 with Masonry Brick Profile 15533 | 3× | €0,23 |
 Support Round 2 x 2 x 2 Stand with Reinforced Underside 19798 | 1× | €0,29 |
 Brick 1 x 1 x 5 with Solid Stud 2453b | 3× | €0,27 |
 Brick 1 x 1 x 5 with Solid Stud 2453b | 3× | Check price → View |
 Brick 1 x 2 3004 | 2× | €0,11 |
 Brick 1 x 2 3004 | 5× | €0,11 |
 Brick 1 x 1 3005 | 8× | €0,07 |
 Brick 1 x 1 3005 | 4× | €0,07 |
Repairability
Can you fix Birthday Diorama if a piece goes missing?
1 of the 56 part+color combinations in this set appear in 3 or fewer sets ever made. Lose one of those and a replacement is very hard to find.
Theme average
2.2%
All sets
6.7%
Hardest to replace
More Seasonal sets
Browse more LEGO Seasonal sets related to Birthday Diorama, including models from 2023 and other sets in the same theme.
Build DNA
Parts inventory insights for Birthday Diorama
157 pieces puts this build -26% against the average Seasonal set and -73% against the average 2023 release.
Vs average Seasonal set
Average Seasonal set: 212 pieces across 314 other sets.
Vs average 2023 set
Average 2023 set: 577 pieces across 506 other sets.
Color profile
Dominant color
White
Unique parts
4.3 pieces per unique type
Repeat factor
Average pieces per unique type.
Most used part
Brick 1 x 1
28xResults are based on official LEGO part inventories. Accuracy improves as you confirm set completeness.
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