Discount Rubber Stamps offers self inking stamps. How can you benifit from this? How about using them on price tags or business cards. They even carry stamps that contain facebook, twitter and the blogger logo so you can use them to promote your links.
Date stamps are also available. Great for filling out invoices or dating items upon completion of creation. Maybe you make a food product or an item that might expire. A date stamp would quickly label your items with a creation date or expiration date.
A few other options that you might not have considered before would be stamps for a QR code. Similar to a bar code but it read by a smart phone. It can link to your website or pricing or information about your company. You can create a QR code for free and Discount Rubber Stamps can turn it into a stamp.
As a small business, you can use rubber stamps to fill the need of what larger companies send to a printer. The benefit of a customized rubber stamp is that you don't have to pay for a minimum quantity. You can use and create with the stamp a small or large amount as your business needs while still being perceived as a quality company.