Have your chimney flashing (the seal between the chimney and the roof) inspected and maintained. Flashing prevents rain water and snow melt from entering your home and causing costly damage to your walls and ceilings.
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.