Grade 3 Soundproofing Materials Needed

Image result for student science experiment soundproofing a cardboard box
The grade threes are working on a soundproofing experiment  and are looking for a variety of materials. If you have any of these materials to donate we would appreciate it very much. They can be dropped off in Mrs. Montgomery’s room. Thank you 🙂
Boxes (Large shoe box size)
Newspaper
Packing Material (Styrofoam chips, etc.)
Small, thin strips wood (would need to be able to line the box and still accommodate the speaker)
Cardboard
Egg cartons (cardboard and styrofoam)
Cotton balls