I started by taking a large rectangular-shaped piece of leftover cardboard and covering it with felt. Large pieces of felt are available at the fabric store; I happened to have some leftover from a Halloween costume. Otherwise, a single 9×12 sheet from the craft store would work on a smaller piece of cardboard. I wrapped a little bit around the back, glued it, and used some clips to hold the felt in place while the glue dried. This is the backdrop. I happened to have green, but I think black would actually make the best background for the colors to pop against.
After the background was ready, I got to work cutting out whatever shapes popped into my head from colorful felt scraps I had on hand. For me, this part was fun, as I found myself thinking of different things we might want to create out of the shapes, such as: “we might need legs for a creature, so I will cut four long thin shapes” or “we will probably need some water so I will cut a wavy blue shape”…etc.
Simon really enjoys his felt board, and arranging the shapes onto it. His favorite things for us to make together are houses, using a large square with a large triangle for a roof. This activity has also been a great way for him to learn about shapes, as I cut them out for him and we talked about what they were. Jeramy has also had fun playing with it, and made both a rocket ship and a helicopter out of the shapes that really impressed Simon and I.