Ditto on the bag balm mentioned earlier, it's great for diaper rash, skinned knees, dry cracked skin, etc. I tried to tell that to my ex when he worked heavy construction and came home with cracked, bleeding hands from the chemicals in the concrete forms. He tried everything ELSE. Finally an old timer on the job told him there's only one thing that works -- guess what -- BAG BALM!
I asked our young pediatrician about it in the 80s when my daughter was born. He said they'd discussed it in med school and told it was great for diaper rash, use it!
For a cough mix honey & whiskey, take a teaspoon.
To kill the itch of a bug bite use a drop of ammonia, works great.
Watch out for mustard plasters! My mom tried it on her young husband since that's what her mom used, he got blisters from it being TOO strong!
If you need to bandage a cut, maybe it even needs a stitch or two, crack an egg and empty out the shell, peel out the white membrane in as large a piece as possible. Affix it to the cut and leave it on as long as possible. It's a little like super glue on skin!
Canned milk (aka evaporated milk) to take the burn out of sun burns - but as I remember it's kind of stinky.
When my DD was a baby she had diahrea really bad and couldn't keep anything down. Doc told me to get a can of classic coke, stir out ALL the bubbles and give her a teaspoon. When she could keep that down, increase to 2 teaspoons. Wait a while and repeat. Or go to the pharmacist and buy Coke syrup. There's something in that recipe that calms the stomach. I always keep a can of classic coke around because it sure seems to work.
When the same sort of thing happened in the 1950s I was terribly sick. The baby of a close family friend died during some kind of outbreak. The doc told my dad to scrape the meat of an apple with a spoon and feed it to me. Dad always swore it saved my life. When I had a baby our ped. said raw apple was definitely good for treating diahrea. Perhaps it's the pectin.
To get rid of garlic smell from your fingers, hold the bowl of a stainless steel spoon with your fingertips and run cold water over your hand. It works.