I've made
juice and given them away for presents, so I order labels from companies that do online printing.
I get "return address labels". You can pick out what design or background you want, and even have something printed on it if you like (you can design it yourself). Watch for sales! Check sites such as: vistaprint, overnightprints - even walmart and other similar sites. The "return address labels" are the perfect size I think.
For "plain, inexpensive" labels that I scribble on, I get a pack of white "file folder labels" (9/16" x 2 3/4") - extremely inexpensive.
Hope that helps.
UPDATE:
It looks like Vistaprint has a sale right now ... 140 return address labels for FREE (you only pay shipping).