|Sebastian Hirsch Venture-Lieutenant, Germany—Aschaffenburg-Würzburg|
Typically for GameDays we organize, we have [nearly]all the pregens printed and laminated. It can be problematic for a few in the Occult series because they take three pages, so we tend to ignore those. The player uses a wet erase pen on the laminate and then returns the copy when the session is over. Sure this is a bit expensive initially, but pays for itself in the long run assuming you organize regular games.
for conventions, we bring a printer for HQ, use the laminated ones like a "menu" and print the selected pregen on demand. That way we don't need to guess which one/s the player wants and don't run out of something. Certainly saves on ink/toner.
Yeah wet erase pens work amazingly on laminated tables, it somehow really helps new player to scribble on them.Since my fellow VL Benjamin Falk suggested an affordable laminating device, I ended up printing several sets of double sided pregens for my region. Totally worth it in the long run, since you usually never have to replace them (and it is easier to remove the typical gamer food stains).
EDIT: There is really no shame in holding back various pregens, if you as the GM don't have a firm grip of the rules involved since they don't come up regularly in your region (firearms, various psychic classes) or hold them back when you know, that that pregen is going to have a really bad time in the scenario (fire kineticist where everything is resistant or immune etc.).