More to explore:
The Playroom's Accent Wall (Featured in HGTV Magazine)
Accent Wall in the Playroom #makingitlovely
playroom by @Nicole Novembrino Balch; décor good for any child's bedroom.
I know there is probably nothing I could suggest that you haven't already thought of but I remember hating that chalk board 45 years ago when my boys would constantly knock it over-so would you ever consider a chalkboard wall? or too dark for the room-perhaps
Maybe it's because it's nestled into that spot pretty well, but I haven't had any issues with it tipping over. I don't mind the idea of a chalkboard on the wall though!