Panhandling. Relying on the deep pockets of others is a long union tradition. Instead of shaking down a company, shake down a passerby.
Multi Level Marketing company. Amway, 31, Tupperware, etc. Turn a small initial investment into a repeat sales opportunity! Bother your friends and neighbors endlessly (which, let's face it, is most likely something you do already).
Scab work. Well, don't knock it till you try it. Money is good, and nobody needs to know. Check indeed.com for listings. It will also insure that there's less work for you to do when the strike ends.
Reward $. Turn in whoever is cutting fiber and spreading peanut butter on aerial lines. Verizon is offer big money for you to turn on the less than scrupulous 'brothers and sisters'...
Pharmaceutical test volunteer. Test new drugs, get cash fast. They might even cure that annoying 'drip' that seems to spread in union circles...
Crash Test Dummy. Only a one or two time opportunity, but really good cash. Just ask Gerry Hogan's family.
Good luck to you all, hope this helps.