The size of the star is about 31cm in diameter.
There is also an holder that fits this kind of ws2812 led lights; https://www.aliexpress.com/item/32816661884.html?spm=a2g0o.productlist.0.0.5c04158enBP27o&s=p You simply zip-tie it to the top of the tree.
Keep in mind that you would need electronics to control and power the ws2812 lights.
Treetop version:
17 pieces of StarTap.stl
8 pieces of StarTriangleTap.stl
1 piece of StarTreeHolder.stl
Full star version:
18 pieces of StarTap.stl
8 pieces of StarTriangleTap.stl
1 piece of StarTreeHolder.stl
The author marked this model as their own original creation.