The trick of putting a towel or two in with a load is often recommended with "delicates" that you don't want to get too dry. The towel will suck up enough moisture from the clothes to keep humid air in the dryer, but it takes a very long time to get the towel completely dry, so you don't run the risk of overheating stuff that might set in wrinkles.
Used for this purpose, a couple of "hand towels" is usually recommended, since large "bath size" towels might be heavy enough to tangle with your fragile stuff.
Despite warnings from the domestic consultants, many people "overdry" clothes in the dryer. When the last of the water is gone from the clothes, there's no more evaporation to cool the heated air that's being blown through, so the effective air temperature in the drum may rise, sometimes fairly abruptly, at the end of the drying cycle, and can set wrinkles in clothing with high synthetic content. The common recommendation is to remove "delicates" while still slightly damp and hang them to let the wrinkles fall out. A towel or two makes the timing a little less critical.