"What about the idea that you can turn in the jar for a random roll of the bosses rare drop like i said above.. However if you qualify at a certain killcount you get to choose the item you turn the jar into."
I like this idea, seeing as how rare they are, i'm sure not many have too many jars shoved in their bank. from my own experience, sitting @ 1600+ kc for zulrah, i've only received 1 jar of swamp, so exchanging that for a roll of an item i'd potentially need would be cool (excluding pets)
