I tested out Crayola’s 3D sidewalk chalk this weekend with the kids. Turned a small patio into fish and shark infested waters. Got the teeth to really pop out. Surprised by how well it worked. Then took it to the sidewalk and lent the glasses to passers by, who were also impressed. Mostly bummed that the 3D chalk didn’t exist when they were kids.

This how-to from Mad Maggie Designs shows how simple it is to make your own sidewalk chalk. Can you guess how she gets that perfect round shape? Yep, toilet paper rolls. One of our favorite building materials over here.