Fairly simple to make, minimal sewing. Total cost less than $10. Materials needed. 1 yard yellow fleece fabric. 8x10 sheet white foam, 8x10 sheet black foam,2 8x12 yellow foam, 8x10 red felt, 8x10 blue felt and lots of hot glue!!
Step 1: Cardboard Box
Pick the size box you want. I glued pieces of different boxes together to get the right rectangles sixe I wanted. I always cut the holes first before the fabric.