I needed to make a keychain holder for a PoGo Gotcah accessory for some friends, and I found that the ones on Thingiverse were too large for my liking. This can be easily attached to your keychain and slips right over your Gotcha. Print it with the flat side down.
I used minimal support inside the gotcha cavity. Printed on blue tape. I've had no problems on my Delta or Flashforge Creator Pro.