Our FIRST mentors at work are organized as a group and we do similar publicity within the company to attract new mentors.
-- PA announcements before local events
-- Posters before events in coffee or other public areas
-- Posters on our walls or by our doors afterwards
-- Weekly company email newsletter has articles appealing for mentors
-- Biweekly company newspaper (after the fact articles)
-- Video showcase on our internal website (no YouTube)
-- Exhibitions once a year in the Fall to attract mentors and spread recognition (see some posters for those below)
These are during school hours, but the schools justify it as an educational outing. We actually have to limit the number of schools we invite or rotate among several. We just don't have the space anymore to host 40 robots at once.
We also get publicity through community service & volunteer awards and recognitions.
ChrisH and the west coast Northrop Grumman mentors have run an engineer Vex competition on the weekend at work to encourage new mentor involvement.