A lot of hardware around the house, both indoors and out, can get old and worn down over time, not to mention rusty and dirty. This can make it difficult and unpleasant to use, but the good news is that this problem is easy to fix with some mouldable silicone.
Sugru is an excellent brand of mouldable silicone that is useful for a variety of DIY repairs. For example, you can take a handful of Sugru and use it to cover up old and rusty hardware while giving it a better grip. It works wonders on old taps, but it's good for many other items as well. Anything that is old or rusty, or has sharp edges you want to cover up, can be improved with some Sugru putty. Other innovative uses include protection for external hard drives and enclosures for flash drives.