Tripod Mount Plate

This is a small plate to mount flat things to a tripod. The hole is for a 3/8 to 1/4 adapter.

http://www.banggood.com/de/Metal-14-p-932988.html?utm_campaign=ios-share&ios_share=1&_branch_match_id=291926555244203635

Heat the adapter and screw it in, fix the plate with doublesided tape to what ever you like.