Favourite bath bomb recipe? (possible swap?)

My favourite bath bomb recipe:

1 box baking soda
1 c. citric acid
1/4 c. cornstarch
1/2 c. epsom salts
Few drops essential oils - usually lavender, clove, or tea tree.
Mix together, spritz with water while stirring until 'damp sand' consistency, pack into molds, turn out to dry.

For use on oily skin or in humid areas where you'd like to dry up the sweat glands a little.

Anyone else have a favourite? Would anyone be interested in trading some bath bombs? I love seeing what other people do for theirs. I'm waiting for the weather to warm up a little to send out about 5 mealworm starter kits, Christmas is over, the egg swap doesn't start for another week, and I'm itching to send something out

-Spooky