My buddy Skip turned me onto these, and I really like 'em. The problem arose because I wear a uniform from time to time, and I found that my left collar was dirty when I arrived at my destination. It turns out that the seatbelt was leaving some grime (don't know if there is some sort of lubricant in the retracto mechanism or what the problem is.) Mrs. JohnD suggested that I get some of them there seatbelt pad dowackys. So I took Skip's recommendation from Saturn Motorsports and ordered these. They look really sharp! They were pretty cheap, and they are nice and comfy, too.
The only thing is, you need to carefully place your seatbelt tab on the seat before closing the door, or you can get a munchy sound.
Ouch!
But anyway, here's the pics...