There goes my mental model that all snakes are evil sinners! http://en.wikipedia.org/wiki/Immaculate_Conception

Note: Eltron also works the same way. (Eltron was acquired by Zebra a while ago.)

I've used a variety of printer types (Intermec, Zebra, Datamax) and they all have worked using plain text drivers. You can hook them up via serial/parallel/IP and just output text to the correct port and you can print labels. Print whatever you want. Printer format (i.e. printer commands) varies by manufacturer, so you'll have to program the correct formats. But after learning the printer language everything is trivial.

A plain old staple gun. Works great for hanging Christmas lights indoors too!