If you are still searching for an chistmas present - This might be it. It is a simple, easy and personal present.

Lithophane is a 3D-printing technique, to 3d print Pictures. The picture becomes visible if you shine light through it from the back.

On the following side is a Tutorial on how to create the custom lithophane keychain: https://iqwertz.github.io/lithophanekeychain/index.html

If you dont have the time or tools to create a keychain with the tutorial. Send a mail to: juliushussl@gmail.com and I can create the .stl for a few bucks.