This is a great toy! My 4.5yr old, 18 mo old, and 11 mo old grandchildren all played with it in different ways. The oldest made color patterns, the middle did the expected fitting in and pulling out of the holes, and the youngest was able to pull them out and grab the 'quills.' When done the pieces fit inside making it easy to store. I love Learning Resources toys they are well made and thoughtfully designed.