Cheesecloth or muslin
Needle or sewing machine Thread
1 Ribbons, lace -- trim etc
Make bags out of muslin or cheesecloth.
Decorate with trims and notions.
Add ribbons so that the bags can hang from the faucet into the bath water.
Fill bags with herbal bath mixtures.
If you are really handy with machine or needle, bags can be made into shapes.