Promotional items I recommend to retailers are: mugs, keychains, mousepads, and any item that can cater to your clients’ business needs. To give an example, if you’re selling to a pizza shop, you can suggest T-shirts, keychains, aprons, or mousepads – yes, mousepads – they make great menus for office deliveries. The point is you need to think outside the box and suggest product ideas to your customer, not wait for them get creative.
-Michael Kaminsky, Sublimation101