Keeping large handled tools, such as sledge hammers- and axes-, hung up on a wall surface keeps them neat and handy. To hang, drill a hole crosswise in the handle an inch or so from the end so the head will be flat against the wall. Since the hole is near the end, it won't weaken the handle.
Install tight-fitting, insulating window shades on windows that feel drafty after weatherizing.
When hooking up a trailer, instead of connecting the trailer's safety chains directly to the hook in front of it on the vehicle, cross them. Put the chain from the right side of the tongue to the hook on the left side of the hitch. Likewise, put the other chain onto the hook on the right side of the hitch. That way, should the trailer come unhitched, the tongue and coupler will land on the crossed chains instead of skidding on the road.
The depreciation factor can help you out when you buy more expensive quality tools. A high-quality tool usually will depreciate less, as a percentage of its purchase price, than a lower-priced tool. This means you can use that quality tool over the years and, if you resell it, you recover a higher percentage of its cost than with a lower-quality tool.