Yes, plywood and a jigsaw. I have an orbital jigsaw and it works wonders. (black and decker)
I will be keeping these, but people came by and wanted me to make some more for them.
If you want to pm me I will give you the designs. It took me about two hours to cut them out, which is the only hard part there is.
I would love to make these if you don't mind messaging me the instructions. Thank youno problem at all, in fact I am loading better day pics for everyone to view.