Forgive me as this is kind of a double post. I first posted photos and a description of this in the negligent discharge discussion and upon further reflection decided that making this its own post might help people who might want to see it, see it.
Here is something I made a couple years ago. As yet, I have not had a negligent discharge. Notice I said as of yet. I am not going to pretend that I am immune from the possibility. Anyway, this sits on the floor next to my reloading bench in my gun room in the basement. It is literally a 5 gallon bucket filled with sand along with a siding dryer vent to give me space to insert the muzzle a reasonable distance. The idea being that if I had a NG, the gun would be pointed in a safe direction and even if it didnt catch the bullet, it would take most of the energy. If I dry fire practice or if I am cleaning a gun such as a glock that requires you to dry fire it to strip, the first trigger pull AFTER checking, regardless of the gun, will be with the muzzle controlled in this bucket. It cost me less than $20 to make, the most expensive part was a couple bags of sand.