I've decided I'm a big fan of tags. I can make a tag much quicker than a full-blown card when I'm crunched for time (which happens to be quite often). Here are a couple of my latest.
I'm also a fan of paper punches (like the flower one Jeff gave me for my birthday). I've heard from a reliable source you can use them on a sheet of labels to make your own stickers. I think I may have to try that.