not everyone has internet.

Start a ! Group.

Singing telegram

Carrier pigeon

Plant a series of clues throughout the city that require knowledge of ancient history to solve, ultimately leading to the meeting.

e mail those who have internet access to cut down on postage. Mail postcard reminders to those who do not.

Little handwritten notes hidden everywhere in the group is work areas and break rooms. Post-it notes on chair seats, in drawers, on bulletin boards..