Not many people store full plywood sheets, but keeping 4x8 half sheets is common. This storage cart will hold your half sheets for later use as well as various lengths of 2x4s, 4x4s, pine boards, dowels, PVC and more.
The addition of coasters provides added workshop flexibility. Just move it as needed to accommodate more tools or equipment.
You'll need a router to cut dados, circular saw to trim the plywood and a drill/driver to secure screws. Squares and clamps are also useful to finish the project.
Build a lumber storage cart for your workshop [Steve Ramsey (YouTube)]