Paper roll fish recycling craft: toilet paper or paper towel roll craft.
The Ultimate Guide to Lego Storage - Cook Clean Craft
Tack a piece of sheet metal to the wall for magnet fun. Great idea for kids room, kitchen and play room.
DIY Lego/train table using storage from Ikea. Drawers for sorting lego colors and/or vehicles.
Great for winter in the basement. DIY indoor kids gym (easy and frugal) by polly
Craft Room: IKEA fintorp mounted under cabinet holding art supplies