My favorite vinegar tricks...
When we moved into our home a few of the drains ran very slowly. I was nervous about trying any cleaning products due to chemicals and the fact that we have a septic system. I tried the baking soda/vinegar trick - it took 2 tries but I haven't had a problem with a slow drain again since!
Also, I get migraines with nausea from time to time. If I feel sick from the headache I take a tablespoon of ACV in a glass of water with a little lemon. It seems to help settle my stomach.