I don't necessarily collect jars for making Halloween jars, but I have collected the Halloween jars that places put out. I've started looking at jars though to start making my own. My wife thinks I'm addicted to it.. Lol. I have at least two to three 27 gallon totes full of bottles.
Oh yeah, I have a ridiculous collection of bottles. I even have friends and family saving particularly interesting ones for me. (Just bring me your glass recycling, folks!)
I cringe at unexpected company; there's always some work in progress that will raise eyebrows among the more conventional sorts.