Follow the links below to various puzzles of mine that you can build yourself.

If you are under twelve years of age

you will need

the loving supervision of an adult. 

Actually, if you're under 21 and living at home, it's probably a good idea to ask someone older if they they think what you are attempting to do looks like a good idea...

Folding Cube Puzzle 

(Lines In Particular Shapes)

'Key Lock' Puzzle Stack