puzzle box easy to print hard to solve —

Founded puzzle box easy to print hard to solve models & stl files for printing
Puzzle Block A
BentWeiss
Puzzle Cube
alex_3dprint
Small box with lid
Enrico_PDM
Vitamin  Pill Box
PeterPrint
Rearing Horse Box
Rick Peters
Segregator Box
Franspai
Magnetic Switch Box
Jiri Blazek