Rakes and shovels can be kept upright against a shed wall by mounting hooks or spring-loaded clamps to the wall interior. The clamps grasp the handle tightly, allowing storage with the business end of the tool off the ground. Contact with the floor of the shed can result in rusty, dull shovels and bent tines on rakes. Brooms and hoes can also be stored in this manner.
Electric power tools are sold in blow-molded cases that keep the tool dry and better able to withstand impacts. Keep these tools in the case for longevity and ease of location. Even the tool's original box is a good substitute for tools sold without a case. Store boxes and cases on any shelving roomy and sturdy enough to accommodate them. Shelf brackets are easily attached to the interior shed wall and allow custom shelf widths. Open shelving is sufficient as the tool box or case will provide shelter from the elements.
Small hand tools are best kept in well-organized tool boxes, but frequent use may require easier access. Pegboards can be outfitted with hooks of various shapes and sizes to hang almost any hand tool. Keeping the tools at arms length and in sight is convenient. Tracing the outline of the tool onto the pegboard assures proper placement after the job.
Bicycle hooks screwed into overhead joists can be used to store anything with spoked wheels or objects too long or clumsy for pegboards. Heavy items should not be hung this way,as the joist may be subject to too much physical stress. Head and lifting-related injuries are also a consideration when hanging items from above. There are services that provide design and construction of systems for this, but you have all those tools to use. Any well-stocked hardware store can provide the materials mentioned.