I made this model to help place the bed sheet back or to move the bed when it's still hot. PLA worked for me; the bottom of the bed comes with this insulator layer, so it would probably withstand various temperatures. Custom-made for my ring finger (20mm), but the step file is attached in case you would like to modify it.

Photos should give a pretty good idea on how to assemble it, please note that tolerances differ from printer to printer, I gave the base model a 0.1mm tolerance, yet it was a tight fit.