Transparent M&P soap
Opaque M&P Soap
various colors to make a bright display
Scent (optional)

Melt transparent soap and split into separate dishes and color. Pour into separate molds and let harden. When hard, pop out and cut into small pieces (1/4-1/2 in.).
Melt opaque soap and scent. Spay confetti pieces with alcohol and place in mold. Let opaque base cool for a while until a skin has formed twice (you don't want to melt your confetti!). Pour over confetti pieces in mold.

This recipe works nice in any tube type mold (try PVC with an end cap!). If you use a tube mold you'll want to make bigger pieces of confetti and pile them up in the mold and pour over, let harden and then slice. This gives a nice stained glass effect.