a simple, interlocking wood building block you can make with relatively ease in a basic wood shop out of only one 2X4.
yields about 60 blocks 1.5" X1.5" X3" blocks.
there are tool substitutions that can be made to make this simpler and watch through to the end or other ideas on how to get these - or something similar made. don't give presents, make a gift!
thanks for watching,