We needed to find an easier way to re-assemble the Smashers toys that my child received for Christmas. Unfortunately we recycled the blister packs they came in right away. I drew up this simple cup to help with the re-assembly process.

Printed with the cup up using PLA. No supports needed. Good luck with these frustrating toys!
Here is the video of how I use it: https://www.youtube.com/watch?v=8uHouzFYhiA