This is a magnetic mount to allow easy repositioning of a Ring Indoor camera, uses two 8 x 25 x 2mm magnets. 

I've included a Fusion 360 file so if you want different magnets it is easy to do, if the new magnets are rectangular just change the parameters. If you want round magnets change the first sketch and the first extrude.

Needs to be printed with supports everywhere. Be careful when removing them from the attachment points as they are easy to break.