Luckily we have quite a few closets in our house, so I keep some empty hangers in each closet. For the front door closet I purchased nice wooden ones, which actually hold the weight of coats without bending, like some of the light wire ones do.
I hate to admit my own closet is packed very tightly... my DH has given me the chore of doing a cleanse in the New Year, not a diet cleanse, but a closet cleanse! He's the organized one in our household. So I will try to get rid of some items, and then I can lower the amount of wire hangers, and replace them with the nicer velvety ones. They are nicer for hanging clothes, since they are non-slip.