I have so much for you all right now, I have been working my butt off. LOL
Right now, I am going to start you off with some very cool Tumblr Backgrounds that will Rock your weekend. :)
My Grungy Tumblr Backgrounds come in one size 1680x1050.
If you need a resizer action you can get it here.
Preview opens at 1680x1050
Make sure you change the following line in your Tumblr Custom HTML
top left fixed repeat to this top left fixed no-repeat
If you need help with adding a background follow this link.
As always, my Tumblr backgrounds are FREE to download and use as you wish just don't claim them as your own and we are all good. :)