+1 for the dedicated label maker. Specifically, the low-end Brother P-Touch model which is often on sale at office supply stores in the United States for $10-$15. (Sorry, I don't know if this specific system is sold in Taiwan.) It uses Brother's m-type label tape, which is plasticky and fluid resistant (I've used it outdoors on occasion). The labels last for years without yellowing as long as they're not exposed to direct sunlight.
Should you use up the demo tape, the next reel of tape is going to cost you as much as the label printer, but at least you'll know whether you like it. :-)