Well, I'm going to say it... I wear diapers to bed every night. If I don't then I can't sleep at all and get very agitated.

I've had a thing for them my entire life. They give me the same comfort as others have described getting from stuffed animals, etc. but it's a double-edged sword because I hate myself with a passion for it. The very thing that helps relieve some of my anxiety also causes much of it.