3. Hemming Tape
Hemming tape isn't essential, but it's a useful alternative to sewing a hem. It's handy if you want to hem a garment in a hurry; another advantage is that it won't leave a mark as stitches do, so is perfect if you want a stitch-free hem or cuff. You use an iron to apply it; the heat fixes the tape in place. Hemming tape is machine washable.