While there are a lot of bubble recipes out there, not all of them will give you bubbles that you can actually play with. Most will pop just as soon as you blow them.
Bubble Painting - A squirt of dish soap, 15 drops of neon food colouring, 1/2 c. of water, straws. Using a straw, students blow until they have a huge pile of bubbles. Gently press paper onto the bubbles, allowing them to pop on the paper.