Printing with toilet paper rolls

Once a week, generally on Mondays, I try to set out an invitation to paint and such provocations very seldom remain untouched around here. This way, we have explored for example shaving cream painting, watercolor making, finger paint, glue and glitter, stamping with different objects such as old shoes soles, bubble wrap paper, toilet paper rolls, acorns, leaves... things that cost really nothing or very little and provide a wonderful experience and a while of focused work.
Last week I placed on a table in the terrace some toilet paper rolls and fluorescent paint and M had fun stamping with them. Such an easy to set up and simple activity!