What can't IKEA's Expedit do? We know that you can't beat it as attractive storage and display in kids' spaces. And a little imagination can transform it into part of play itself.
Enter the LEGO playhouse. The Expedit offers multiple levels and compartments of play. Just affix base plates to each of the surfaces, and for some extra inspiration, tape up some LEGO posters to the "walls." For more details, check out this post over at IKEA Hackers.
(Image: Misha Rahman van Eeden via IKEA Hackers)