I carry Tipec Business Cards and flyers in the car - especially at shows etc.
As a giveaway I think previous copies of All Torque are ideal as its a nice looking mag and has a "no cost" element for the club. By this I mean that the cost of the Mag has already been incurred and so giving it away to a prospective member has no additional cost implication for the club.
I'm not sure that we need anything else - talking to another enthusiast will either make them interested in joining the club or not. The discounts available to club members now make the membership cost a "no brainer" so the only real question is whether they are enthusiastic enough about their car to join the club. If they are - give them a recent issue of AT as a pressie

Everyone's happy
The only other thing we do is take penny sweets to shows - whilst you're chatting to mom & dad about the club give the kids some sweets. If the kids are happy so are the parents.
Just to clarify here - don't offer the sweets to kids unless Mom & Dad are in attendance - you might be misunderstood
