MaverickLabel used to operate a sub-site called idmystuff.com, which has since changed hands, and the fantastic labels they offered are no longer available. I'm sure stickermule could do their own take on this with high standards. Right now the best alternative is trying fly-by-night outfits on amazon, or ordering stuff that is meant for labeling kids' stuff and looks the part. You could buy them buy the sheet, each sheet had the same 3-line label in different sizes, and they were available in a variety of colors.

i've bought hundreds of these for my company, and its disappointing that we can no longer get them :(