This bow is great for single-faced ribbon, which has a design or color on one side only. You can also use double-faced ribbon, which looks the same on both sides. Wired ribbon holds its shape and can be readjusted if the bow gets crushed.
If you're using twist ties, get them in varying lengths, from 4 to 7 inches long, for different sized bows, or buy a whole spool to cut any size you need.