Where can I find 10.25 inch wall tabloid borders?? I am redoing a bedroom, and i necessitate to find a...

I am redoing a bedroom, and i necessitate to find a 10 1/4 inch wall paper border, to fit between some molding. It is for a 6 year weak boy room. Anything with superheros (spiderman, pokemon,etc...), or skateboarding, sports, fishing, or anything similar to that would be great!! I've been questioning all daylight and can't find anything! Thanks so much!!
I inevitability HELP asap!!?
Answers:    This site has both soccer and basketball borders (about two thirds down the page)

http://www.lelandswallpaper.com/boysNgir...
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Any store that sell wallpaper will have TONS of books on childrens rooms and borders. Home Depot, Lowe's, Sears, Sherwin Williams a wallpaper store.
I want to build a house! Answer please.?