Paints (I used poster paint because I already had it)
Cookie cutter(s) in the shape(s) of your choice
Paper plate(s) for paints
Cardboard (place inside of t-shirt before stamping, prevents the paint from bleeding through)
Put some of the paint on a paper plate and press the potato stamp into the paint, just like you would with a "regular" stamp and ink pad. Be sure to stamp the excess paint onto the paper plate before stamping on the t-shirt.
The last step, step back and let the kiddos have fun! It was hard to watch the girls and not butt-in but they had fun and did awesome without my help. Their t-shirts were uniquely theirs. I love the flag Grace created!