I know zip about kettlebell training, hit up Combat Sports and Strength Sports as I’m sure they know quite a bit. BUT;
as a fellow broke-ass bodybuilder, I recommend finding a buddy with a gym membership that allows him/her to take a guest and schedule regular trips. Offer to train them for free.
If that doesn’t work, check out articles on bodyweight/gymnastics training on this site and others (particularly dragondoor and Coach Sonnon’s site). Work on:
*Pushups, every variation (wide, narrow, one-arm, clapping, hopping etc)
*Pullups, every variation (ditto)
*Bodyweight squats (Hindu, jumping, one legged etc)
*Bridges (back, forward, neck etc)
Invest in a pair of gymnastic rings if you can. They can be found very cheaply online. Hell, work on basic tumbling if you have a little space. Swing that kettlebell. Grab a heavy sledgehammer, call some auto places to see if they have free tires and start pounding. Make your own sandbags. See if a distributor near you has any kegs they don’t need any more. You can always find free barrels, too. Steve Justa and Brooks Kubik has written reams of material online about odd lifts/implements.
There are many, many things you can do with your bodyweight and random objects and while it may not provide the same overall stimulus as weight training you can still get in kickass shape, with the added benefit of flexibility, grace and the sheer joy of moving your body through space. If you really work hard on the most difficult variations you may find you come back even stronger after your hiatus is over.
Best of luck.