Since I give crocheted and knitted gifts to my family, I get feedback on their quality. Last Christmas, I learned that some of my dish cloths and other kitchen items tend to unravel under heavy use and frequent washing. I had been simply been making hand knots through the last loop, occasionally tying the yarn tail through other loops as well. Martha Stewart's Knit and Weave Loom Kit suggests a better method, but I hadn't been using it because it meant extra items to carry in my crochet bag.
Now I've bought a little zip-up bag for the new items - a plastic needle and needle threader. You can use a metal yarn darner for this type of work, but the plastic needle is more flexible and easier to carry. One is included in almost every loom knitting kit. Martha Stewart does not mention needle threaders, but they are the best thing that ever happened to older folks and younger ones who wear glasses. I'll explain that with my photos.