Deluxe personal check ordering systems has custom made Star Wars designs at their online store. At Deluxe.com, click here. Under the heading, "View Check Designs by Lifestyle Category" click "Cartoons & Entertainment" and you'll see the Star Wars collection. That will take you to the 10 Star Wars check designs as well a few other custom goodies you can order. Thanks to QuiGonJ of CoruscantCity.net for the heads up.
Update: Handmaiden Andé writes in:
"I saw your post on the Deluxe personal checks. I've had them for a few years now, and they're great. However, when I received my check reorder this week, it came with a notice saying the design was being discontinued. They gave no reason. I hope other fans are able to get their orders in soon."