I went into my LBS asking for a bunch of ferrules and "cable end caps," because I wasn't sure what the latter are called. The first employee I asked said "Oh yeah, those things, I don't know what those are called." He then turned to another employee who said "We call them mouse condoms."
We all had a good laugh as employee #1 looked up the price of "mouse condoms" in the computer, with no success. Ultimately, they gave up, charged me five cents each, and sent me home still without any idea of what these things are called.
Is there a specific name for these? Or should I just stick with "cable end caps" or "mouse condoms" when making future purchases?