Helmet Wall Mount

I have designed a helmet holder which I have mounted to thin plywood on a french cleat wall. I designed the tread pattern based on a common MTB tread pattern; Can you guess which tire and brand? It holds my full face helmets perfectly. The ski helmets hold well too, but work best with the front of the helmet facing up.Two of my half-shell helmets for MTB work well, but the third with a lot of plastic at the back works best if I hook it through the plastic at the back. I may make one with little cat ears to grab through vent holes and mount that one facing up, too. Test printed in PLA with no problems. Will likely do multi-colour and PETG for my family's 9 helmets (tire black and different base colour for each family member). I designed it to use #6 wood screws to fit flush on the mountj.