Etsy makes it easy!
Really, I can't be the last to know about this, too, can I?
Yes, Lois. Get a grip, sweetheart.
Removable wall decals. Discovered by one very resourceful mom. Truly terrific. Relatively easy to apply/I witnessed two males making their way through the process. Hilarious. And superbly executed.
Oh, and there's one of Molly's Mobiles, too! A perfect addition.
Only problem I see is having to make a decision among the hundreds of choices available.
The source: Etsy. Once on the site, search for wall decals. A EXCELLENT addition to this/and any/child's room.