Wooden Rainbow Toy

This is a copy of a creative toy for toddlers seen on Amazon. I glued two pieces of 21mm plywood (400mm X 200mm) together and then using a jig on the band saw, cut out the rainbow shapes 25mm wide. I made up a drum sahnder using circles cut out from the same double layer of plyywood using a hole saw, with a bolt through the middle, to sand the the inner edges. My wife painted the rainbow colours using acrylic paints as this is what we had to hand (I would suggest rather using using a water-based enamel).