Similar to the EDC thread, I'm looking for recommendations for a decent quality knife that could be used as a keychain. It doesn't have to be tiny or anything, but I'd like to keep the closed length less than 4" with a non-serrated blade 3" or less. Also, it need not be a dedicated "keychain knife" as long as it has a lanyard hole that can accommodate a keyring. Pocket clip is okay, but not a necessity. I was looking at some of smaller Kershaw Folders, but wondered if there are some other options I should look into around the $30 mark.