Glue and paper still stuck on my wall?

Okay so when I little I hung up posters of celebrities I get from magazines. I rip out the posters and hang them with Elmer's Glue. Now I took the posters off because some of them were to "babyish". So I took it off the wall, and on each corner there's a little paper from the poster still stuck with glue. And I don't want to buy a bucket of paint for just that one mark. What can I do??