Created this cup for my kids to have something to target. I wanted them to be stackable for easy setup and storage.
Any material could be used, print using spiral/vase mode.
https://cad.onshape.com/documents/0a0484ffd7b1154741cf7a52/w/725e0b78f5ec0fa5f4df54f9/e/749fcc367e31ee8059da9de4
The author marked this model as their own original creation.