There is a type of modular wood kit that is sold at some home improvement stores. It is some heavy particle board pieces, and each kit forms a wooden cube that is 15" on a side, with one of the six sides open. I bought a bunch of those, assembled them all, then painted them white. One whole wall of my garage has those stacked up about five high, with the open side facing out, so it makes twenty or thirty cubbyholes to store different items.
Rope and such is on hooks on pegboard, which is above and behind the white cubes. Skis and poles are in their own closet to the side.
Fuel is kept in a fireproof container. That is white gas, denatured alcohol, butane blend, pure butane, and some unknown liquids.
A friend of mine commented that my interior decorator must have been Eddie Bauer.