I also highly suggest writing/typing up a 'common dice pools' sheet, such as social, weapons used by your character, magic (if any), hacking, composure. Perception with and without the various mods one might have.
Another thing I tend to do is mark what gear is used/worn by default, and what 'ware (if any) is DNI, versus linked to (one of) my comlink(s).
A notepad is very useful; good for writing down mission objectives, places, names, payment, reminders for when the GM says, '+1 karma!' on the spot for something awesome you did.
Have your contacts worked up as more than just a job description. Name, Metatype, specialties, and I often-cut-paste the generic's stat block out of one of the books.
A spare pencil or two, with good erasers. People forget, and it gives me warm fuzzies even in home games to be able to supply someone with what they need.
If your characters have 'unusual' abilities-- Raptor cyberlegs, SURGE qualities, spells that every other mage doesn't have-- have a quick reference for those, including book and page number. Three pages of cheat-sheets are much faster to search through than four books (unless a pdf is available at the table).
Happy gaming!
