When I was standing in line at Michael's earlier this summer I saw some packages of glow sticks for 1.00. Figured I they would come in handy sometime so I grabbed a few. Saw an idea where you throw them in a bathtub. Simon thought it was so cool to take a bath with no lights and the glow of the tub. It was pretty awesome! Had to use manual settings to get the adjustment right. I think I did alright!