I created a fish stencil and cut out a bunch of fish from ivory, gray, and blue felt. I then attached them to the wall with poster strips. I had them curve around so it looked like they were swimming in the ocean.
Easy and fun.Velcro + popsicle sticks make for great quiet time or restaurant activity. Put velcro dots on the ends of popsicle sticks. Kids can make letters or shapes over and over again. I found velcro dots at my local dollar store.