I wanted to make a way to lock a structure together that was fairly strong and could be dissembled with no tools.
This is an early (very rough) prototype of that effort.
I refined the design to use smaller pegs and a more robust rounded center tab in a holiday gift, but the prototype pieces illustrate the concept pretty well. The whole thing was cut out of birch ply.
If you attempt something like this beware that hardwoods will break very easily across their grain. Orient and scale your tabs accordingly… but I think your best results will be with plywood.
Go forth and be inspired