Cardboard (Amazon Prime boxes and a Sterilite shelf box)
Step 1: 0K Start!
Pick the most sensible side to cut out.
Reinforce with duct tape.
Step 2: Build Le Shelves
Cut to dimensions of your shoes.
Tape flat board on top for added support
Cut along outer to easily bend bottom support skirt
Step 3: Stack 'em!!
Live, Laugh, Love!