If cookies get hard and dry then the moisture from the bread softens them, at least that's what my grandmother said.

She also recommended onion and honey for a sore throat, although the best cure for a vicious cough I've ever been given was one part honey, one part lemonjuice and one part everclear (about 6,000 proof, I think!).

Cockroaches need water. If you have something like tidybol in the toilet, and put a few drops of bleach down the other drains, making sure not to leave any other water sources out for them, you can go on vacation and come back to no roaches. Works best when you combine it with the egg killer sachets by Raid or similar, though.

You should use ammonia free glass cleaner on stained glass. Ammonia will eventually pit the glass otherwise.