Here's one that is pretty nifty! Utilizing the Smoke Ejector door bar to get a spread on a commercial steel framed door. This works well....as long as the walls are steel or wood stud with sheetrock or plaster. I haven't had success with it on a concrete or block surrounded door! Generally the buck springs back after the door bar is removed.
Here's another: Marry the forks of two halligans to form one long pry tool for better leverage. "OR" utilizing a steel hook "wrapped" around the halligan for the same purpose.
"OR" slipping two steel hooks through the shoulder straps of a quickie harnessed SCBA of a downed firefighter, straight down to his legs and draping the legs over for a makeshift stretcher.