More to explore:
Pallet gun rack..
Pallet Shelf Tutorial bec4-beyondthepic...
Pallet Kitchen Pot rack and Shelf | Pallet Furniture DIY
pallet - love - shelf
Gun Rack made from pallets: variation using dowels for the kids airsoft guns, helmets, glasses, and ammo. Open or wider shelf on bottom for big jugs of pellets???
Home made pallet gun rack