I created this 2d model of the sprunki, and added the name “Jaxson” below. I created an stl with a hole for paperclip, so it can be embedded in the print, and function as the loop for attachment to a keyring.

The hole in the body is for a regular sized paperclip.  I just added a pause about halfway through the print, and popped in a paperclip, then resume the print.  I think this will be stronger than adding a hole for the keychain.