Sometimes my son and I wander IKEA just as a place to go in cold weather. Even though I'm not shopping, I enjoy the clever ways they set up their showrooms. This idea - using a wall shelf as a desk - struck me as a smart solution for small kids' rooms.
Here, they mounted two BJÄRNUM shelves at kid-height and tucked in a few stools. You could, of course, use whatever height works for your child. I've owned BJÄRNUM shelves in the past and can attest to their sturdiness, even for leaning on. The shelves are shallow - only 11" deep which would be too small for doing homework on, but is big enough for a younger kid to use for coloring, drawing, using clay, etc. The shallowness is a virtue for small bedrooms which couldn't otherwise fit a desk or activity table.
(Image: Carrie McBride)