Packing case or parcel filler

[merliauds]

Hello

I want to buy the type of packing case filler that you get in parcels or boxes with odd shaped contents. I think its made of expanded polystyrene but not beads,  the stuff that is bigger than beads and sort of "S" shaped. I need quite a large quantity and wondered if anyone knew of a supplier or website where I might be able to find them.

Thanks for any suggestions.

[Danny]

something like this

or this

Danny