If you find yourself in need of some new Mario decor for your place, why not check out this line of Nintendo Power-Ups by Blik? Ranging from Mario to Bowser, each decal is printed on-demand and allow you to move them from place to place on your wall at any time. Concidentally, I just signed the lease for an apartment today and I'm not really all about making a bunch of nail holes in my walls, so these might be the ticket.
Each decal ranges from $10 to $24, if you're interested in picking some of them up separately. There's also the Super Mario Bros. Re-Stik set for $75, which serves up 30 pieces for you to mix and match and create a scene for yourself.
If you're not into Mario so much, there are some gorgeous Zelda stained glass scenes, Space Invaders graphics, Centipede, and even Asteroids sets. I've got my eye on the Pac-Man set as well. I wonder if they're actually as easy to move as they claim.