Still have this thread:
http://startalancenter.com/forum/operational/promotional-ideas-specials-list/msg2665/#msg2665Also, I was thinking of some sort of collecting game. As in get a lanyard and some buttons and a plastic card with the GC logo that will clip to the bottom. Then have them collect different buttons, let's say all through Feb. In March, they bring in their lanyard and the amount of buttons they have they get <insert your prize here>.
The buttons could represent: 4 hour purchase on a Mon-Thu, wearing your game center tshirt, achieving a certain score in a game, bringing in a new customer, etc...
You can have a day where whatever they purchase in Feb they get free in March. Have to print a special receipt for that but it works REALLY well with a restaurant in my area. They only do that, I think, twice a year.