Crayola See Thru Light Designer is a fun toy that can range in entertainment from one-time-use to plays-with-from-time-to-time. It's not going to provide hours and hours of entertainment, but kids can definitely have some fun with it, especially when there are a few of them making animated drawings together. The age range is 6 and up, but I can see kids a little older than 6 playing with this more frequently.
That being said, I had a lot of fun with it! I loved goofing around, drawing all sorts of things and then lighting it up. I do think getting a lot of patterns would be the best idea, but much like Silly Putty, the Crayola See Thru Light Designer is definitely the type of toy that requires your imagination and inspiration for total enjoyment.