Lego storage in a tool box. Really cool idea especially for a boys room, and when he is all grown up fill it with tools!
Turn basic IKEA cabinets and dressers into multi-functional platform beds: you get both beds and storage in the same footprint.
"If you want simple, beautiful, compact storage, look no further than the combination of a few pieces of IKEA furniture. The folks over at IKEA Hackers discovered that LINNMON table tops, combined wit (Diy House Toy)