This is a super simple craft which is also completely free to make! I love incorporating natural parts into our crafts, especially when there is a memory connected to them. My toddlers found these stones at the beach. I cut two pieces of cardboard to the same size. Then I traced the rocks on one of the cardboard pieces, and cut them out with an xacto knife. I glued the cardboard pieces on top of each other and that’s it! The boys get so excited when we make something out of the things we’ve found in nature. This puzzle was no exception.