I love felt, so many things you can do with it, and at about $.25 a sheet, it is something we always have on hand. I made Aiden a felt shamrock matching game to work on colors and patterns. I cut hearts out of felt, and put together shamrocks with different color combinations. I took pictures of the different combinations and printed them on cardstock.
Aiden picks a card, names the colors, and matches the color pattern.