Walls and curtains, not now

The next step in "cozy minimalism" would normally be doing the wall treatments (painting or whatever) and hanging drapes, but as a renter, there is little I can do with the former, and nothing that I want to do with the latter; I'm ignoring the wall and leaving the vintage blinds up. Curtains don't make sense either for this particular room, or for my stage in life--where I need to maintain a high level of "monkey-proofing".