Gallo22 said:
I don't think it's silly at all.
What's the difference between this and a convention? If my DM wanted a few $$ to cover the cost of the $20.00 adventure, paper, miniatures that match the adventure he is running, etc., I would have no problem giving him/her a few $$ a week to play.
As far as gamers being cheap...not all of them may be, but in my experience many are...
Well, since you ask, the biggest difference is that the DM doesn't make a single penny off of games he/she runs at a convention. It goes to pay for the hall, the staff putting it together, hall security, etc, etc, etc. Not the DM. At Gen Con 07 I ran 4 events for Goodman Games, another 4 for Paizo, and an after hours game for a bunch of other game designers. Did I get paid for any of it? I got a free badge, but otherwise nope. And trust me, I busted my ass far more than I do at my job that pays the bills. But I did it because I truly love running games and providing that entertainment for people.
What you describe above about books and minis and stuff is what I suggested earlier about asking your players to pitch in to help you buy game related materials. This is acceptable. My players have done it before for me, in fact. But asking them to pay to play in your game is not the same thing. That distinction needs to be clarified.
As far as tips go, most of us do not make our living being a DM. If we were actually monetarily compensated appropriately, we would have no need of tips. That guy behind the counter at Starbucks pouring your coffee is paid crap. He
needs those tips because what he's making probably isn't enough to live off of. Same thing with the pizza guy and so on and so on.
OK. I've had my say and then some. And the OP has already said he won't be putting out a tip jar, so it's kinda moot at this point.