Ephemera

Ephemera is a company that makes novelty stickers, buttons, and magnets.  They buy slogans to put on those items, and they pay $50 for each slogan.  If you've got some funny one-liners about politics, religion, or anything else on their list, email them in using the online form.  You'll typically get a response within one to five months, but if they like your idea it may take longer to go through the whole process.