Inexpensive small waste tote

I just sold my 32g on Craigslist. We've had it 2 years and decided we preferred the 22g we had prior. I'm going to repurchase, and might even go with a 15g. At that point, I can put it in the bed of the truck myself. We've discovered that it gets used once or twice a year at most. Even those times, taking 15g out will give us enough for the one more day that we usually need. I wouldn't want to go back and forth several times, but I don't see us doing that with the way we camp.