I don't think the "not showering" thing is as big a problem as you guys are making it out to be. Okay, yes, some people come to K-con without having showered for days, and then don't shower for the rest of the weekend. They'd probably just make a funny face when they found deodorant in their swag bag and say, "wtf is this? Where's my Magic: the gathering cards?"
BUT, I think a lot more people may shower, but just don't put on deodorant, because either they forget, or because it isn't part of their habit. Having some deodorant available for them would hugely help, I'm sure.
There's also plenty of non-stink deodorant available. I know that sounds redundant, but I meant it's pretty much odorless, and just focuses on blocking odors.
So maybe a stick in every swag bag would be a little overkill, but I think it would be cool to have a basket or something of some small deodorant sticks that people could discreetly grab for themselves if they feel so inclined. I know I've personally had days, in hot weather or something, where the first application of deodorant didn't seem to last and I find myself half way through the day beginning to stink. It sucks!
But anyway, having something available and OBVIOUS would be cool. Like, "Hi welcome to the info desk, there's a basket of deodorant here. Right here. Beside me. How can I help you?" Then if one person in a group decides to pick it up, they can bug their stinky friends to wear it so we don't have to bug them.
Oh! New idea!
A smokey the bear campaign, of sorts! "Only you can prevent con-funk!" and just have it posted, and talked about, with some catchy mascot! With the forest fires, just one person has to take it to heart and be like, "I can prevent this forest fire! And I'm going to, like a boss!" I'll bet people would get just as stoked about preventing con funk!
Lol