Google the following string...AA Mini Maglite Pocket Clip 408-017 and the first result should be one that you are after. This is my second post and I am not too sure whether I can post links yet. Are you looking for these for the Peaks by any chance?
I am not sure how much clips cost but the energizer 2AAA penlight may have a clip on it you can swipe. I would have to look at it to make sure it is removeable and reusable though.