Liquid watercolors (from Discount School Supply) are versatile. This week, we colored the snow and the bath bubbles with small squirt bottles. Then we used dauber bottles (discount school supply again) to decorate shapes on the light table. It all washed off, except maybe a small spot of red on the white tile grout. :) A little elbow grease and that came off too.
We have all enjoyed the daily infusion of color and light on these cold winter days.