Rangolis on/under water
Required items to make rangoli on water:
a shallow bowl, or a plate. You could also use a shallow tray. (It can be a steel, plastic or a glass bowl).
a couple of spoons of oil or ghee (clarified butter).
white rice powder, or white distemper powder.
colors of your usual rangoli powder/dye to use for coloring your rangoli.
water to fill up your bowl or your plate.
Procedure to make the rangoli:
Plan on a design to make as your "rangoli on water".
Choose a place (could be a tabletop or an altar) to display your "rangoli on water".