Sometimes the simplest ideas are the best, like in the case of this too-clever-for-words storage project from French decor blog Heju!
I mean, it doesn't get any easier, or more functional, than grabbing a few wooden boxes, painting them, and attaching casters -- right?! Genius.
While the folks at Heju leave the boxes unattached for a more modular, stack-it-how-you-want approach, you could easily squeeze some wood glue in between layers for a more stable storage cabinet.
Check out the tutorial over on Heju! (Note: this site is in French, but the photos/project is pretty self-explanatory.)