A trendy piece devote in could be the graphic T-shirt.
You may choose, like I did, to have your own company/product barcode. Essentially the most common application for this purpose has the name Static FBML, which is handily found in Facebook search. http://Www.Tuili.com/blog/go.asp?url=http://www.webcordesignbuild.biz/__media__/js/netsoltrademark.php%3Fd=launchhappy.co