I created this to hold lithophanes but it could hold what ever you want.
I left this as a work in progress because I intend to create different versions with more angles, sizes, and different tolerances to provide more uses cases and to enable it to be printed on more printers. The current hinge tolerances are only .15mm and may not work on all printers.
You will have to work the hinge a little after it's printed to get it to move.
Hinged_Easel.stl | 392.7KB |