I work for an online retailer and we are always trying to come up promotions or giveaways to help build the business.  There is nothing a customer likes more than unknown unexpected gifts, In my expierence, T-shirts seem to get the best responce.  I mean, who doesn’t want a new cool shirt.  I find all my large shaped shirt online for simplicity.

I tried out a local short press guy but his rates were very high and the guy was extremely rude. So take it from me, if you want to peak people excitement, I suggest using shirts as promo items.