A head shop will have the tasty puff things for about $3.

Take a kool-aid packet (the powder that you're supposed to add sugar and water to, not the sugar-free kind, they cost about 20 cents each I think), and add it to the water of your bong, shake it up, smoke. I use cold bong water and it does just fine. It doesn't fully mix in, there is powder on the bottom, but it has a good taste.