When we visited the Imperial War Museum at half term, I spotted these Make do and Mend posters in the shop. They only cost a few pounds each. I had a big blank wall in the bathroom, so I bought a large, plain rimless frame from Dunelm and put it up this weekend.
We did a similar thing for my son's room, with a retro tube map. Cheap and easy pictures.
* Thanks for your comments. I have found out that it is a fault with Google that means I am currently unable to reply. They have solved the spam problem recently, so I am hoping that someone, somewhere, might fix the comments facility, too. x