Small Smoker ???

PK Smoker

Best, longest-lasting, portable smoker/grill made.

Yes. I've had this Brinkman for about 5 years now and it works great. You have 2 choices, if your old unit is a Gourmet model then keep the base, if not, but SS bolts and wing nuts to put the legs on this one.
http://www.amazon.com/Smoke-Grill-Single-Charcoal-Smoker/dp/B00139JUH6/ref=sr_1_3?ie=UTF8&qid=1377994344&sr=8-3&keywords=brinkman+single
This will break down and take little room, and you can put your chips etc in it while traveling.

I've been turning this over in my mind, too...how to accomplish the job without using a lot of storage space is key for me.

I'm contemplating using the regular portable propane grill for the meat chamber and building an add-on out of stovepipe or something that could channel smoke/heat into it at a controlled rate. This is how many combination BBQ-smoker setups work, and it seems to me that something could be cobbled together to do the same job. The grill wouldn't be connected to the gas, of course, and since it wouldn't be getting high fire temps I'm not worried about damaging any of the gas components. And it'd do two jobs instead of just one.

My grill doesn't have a hinged lid, so the idea was I'd build a "collar" that raised the lid enough to allow for a cutout for the pipe...firebox itself to be an older portable, guts removed.

Been pondering the same question. Thought about mounting a box on the rear to store it in or even doing a bumper mounted smoker but concerned about getting the back of the camper dirty. Thought about making a box to fit in bed of truck to stow it in but don't really have any help to move it. Would probably be awkward to try and move it around by myself.

I like to offset wood fired smokers. Traveling with firewood is such a no-no, but the pellet smokers might be an option.

If I had a toy hauler I'd just put it in the back and go.