Players use a cooking pot and other stackable containers fill them with grenades then shoot the pot to blow up all the grenades inside.
The pot is still useable after the explosion which makes no sense since it should be blown up into a million pieces.
Get a cooking pot or fillable container.
stack it full of grenades.
place near a wall and shoot and it explodes like a IED.
Change things around so if they do use the pot or other items they (the items) take damage after the explosion so they cant keep reusing the same item.