Hi! Have a project I made for my charge, almost 8 months old that you may want to post. I just used a big piece of cardboard as the base. 1) Hot glued various items with different textures. For example I did several different fabrics, pom poms, popsicle sticks, rattling wrapping paper, sand paper,a sponge, bubble wrap. Other ideas are carpet samples or any number of other things from around the house. 2) Then to reinforce and make sure baby couldn't tear them off I put duct tape around the flat pieces (used Velcro fastener for several items...) 3) to add a little more challenging aspect, and help with additional learning I cut pieces of felt fabric big enough to cover each item and hot glued it at the top to make a flap. That's it, pretty simple idea, could change it up in various ways.