Foam packing material that comes with toy packaging also works.

My tool kit for fossil hunting contains rock hammers, chisels, protective glasses, a loupe, my notebook, various kinds of glue, and packing material and crates.

So the snakes are imprisoned inside unpleasant expanses of packing material ?

The fire was said to have started in packing material on the ship.

After passing a purity control valve process air enters on tip of the distillation column and flows down through the packing material.