the boo and the boy: built-in kids' beds (source hgtv) Love this idea.
Cool 18 Crazy Ideas of Kids Room : Let's Redecorate Yours https://mybabydoo.com/2018/03/16/18-crazy-ideas-of-kids-room-lets-redecorate-yours/ When it comes to decorate the kids room, sometimes you need to challenge yourself to be more creative. Because in their golden age, children should learn a lot, starting from their own room.
Bed couch with draws, shared room, space saver. this could go in bedroom area. like the shelves idea, too. can add a light wooden dining table and a few comfy folding chairs to make cool dining area in bedrm space, if bed moves to living room area.
DIY Trundle Bed Tweak / If you’re ever in need of an eco-friendly mattress, I can’t recommend Brentwood Home enough. They have lots of options at different price points for cribs, trundles and larger beds, too. - via Housetweaking