As I walked upon the shoreA-waiting evermoreFor Love never meant to beLost at temptuous sea - Anonymous
Various chemicals will froth and bubble upon contact with other certain chemicals. Some of these chemicals are non-toxic (Alka-Seltzer and vinegar). AlkaSeltzer will react with many things. It is a very bubbly reaction
A Dream IdeaA large tub is filled with a mildly acidic solution (I'd choose lemon juice) and then a large, plate sized Alka-Seltzer is broken into hand sized chunks and dropped in. You slip into the tub veeeeery carefully and enjoy.
A Real IdeaFor the many of us who dont have tubs of lemon juice, here is the Massage in a Bottle; a simple, fun thing. A bottle has a divider running through the middle. The two liquids, kept inside, are squirted onto the massagee's back, and upon contact with each other, the foam and bubble like mad, creating the Massage in a Bottle.-- DesertFox, Feb 07 2006 Bath bombs http://www.mcssl.co...products/bath-bombs [Klaatu, Jul 23 2011] Sweet !. s.-- sirau, Jul 06 2011 D'oh!-- Zimmy, Jul 23 2011 Baked <link>-- Klaatu, Jul 23 2011 random, halfbakery