I keep my old scrap mags for a while (ok, a long time, they kind pile up and get out of control) and then periodically go through them and pull things that inspire me. Whether it's a LO composition I like, a project idea, or a fun article, I save them (I star the parts that catch my eye so in the future I know what I was inspired by) and put them in a big expandable file. I also have 46578461538 blogs and links in my bookmarks and blog reader and will go through those.
I also like to get away from everything. Watch a movie, take some new photos, anything to get my mind off the fact that I'm totally uninspired.
I hope you find some inspiration my dear!