Here is a scaled-down version of an old-time, hopper-shaped, slat-sided whole-corn crib that you can build for under $250 using new materials or for a fraction of that with recycled materials.
This detailed shed plan-set is in both Standard and metric dimensions. It is built on skids, meaning that there are no footings or foundations and that the finished shed is able to be moved. The side cladding is board and batten and the roof cladding is corrugated roofing iron over plywood sheathing.
A backyard barn or storage shed that anyone can build.
A putter shed is a great way to increase your outdoor storage area. We built ours using a plan we saw in a magazine, but most lumberyards and home centers will have plans and kits available.