Protect your tools from the weather by storing them in some form of shelter. This also will keep them out of the hands of small children. Check all fasteners and moving parts. Tighten all loose nuts, bolts, or screws to minimize wear and possible damage. This also is important for safety reasons, particularly with power tools.
Most gardening tools have a cutting edge that needs to be sharpened.
These include shovels, hoes, and pruning tools. Don't forget your mower blades. They need frequent sharpening. If your lawn gets a brown, ragged look it is most likely due to dull mower blades. The more frequently you sharpen your tools the easier it will be to keep them sharp.