What are some of your favorite life hacks?

[Kurt]

More on hydrogen peroxide. I've read were there's some pretty good evidence that at the first sign of a cold or flu to put a couple of drops of h2o2 in each ear. It's also OK for loosening ear wax. I think because of the corona virus situation it's a good time to use a little prevention. To me this is one of those things that probably won't help, but can't hurt.