You can make your equipment float in loads of other places in different game modes. Like for instance, on WMD in the building to the left of C on domination where the walkway is outside right in that door if you place a claymore right it'll be floating on the top of the door. Or another one, which I don't know how to explain, but on Hotel by the elevator you can make your equipment float by the button to call the elevator I believe. It may be the other side, but yeah.