I recently bought an empty punching bag for, well punching, and I am trying to find a good source of filler. I have a plentiful source of free packing peanuts and was hoping these would work, but this might be too light. I realize the typical weight should be 70-100 lbs for a bag also, and this would be hard to achieve with packing peanuts.
Does anyone have cheap suggestions for boxing bag filler? Would packing peanuts work if I packed them densely enough?