re: Promotional items to give to customers. Ideas?

Whatever you end up getting, make sure it is high quality. Nothing worse than the guy that gives you a dozen warbird golf balls or a shirt thatll make you itch if you wear it in the heat. Means a lot more when someone gives you a ProV1 or a footjoy golf shirt.

Some good ones ive seen are
-clip on jbl speakers with their logo on the front,
-metal business cards that also function as a bottle opener
-backpack coolers