I happen to visit every sticker/label printing company in the North of England and Scotland daily through my job. I happen to know one or two blue companies too! I will ask the question, how much it will cost for some labels to be printed, if I can supply some free material for them to be printed on. (Guess what I sell for a living)
You might all have to dip your hands in your pocket though, but a quid a piece should be ample. Let me know if you think it is worth doing and what artwork you suggest. The big blue logo reduced down to the size of a tax disc sized label would do it perhaps?