Answer: styrofoam

AnswerCrossword Clue
STYROFOAMCup material
STYROFOAMWhat some peanuts are made from
STYROFOAMShipping carton filler
STYROFOAMNew synthetic pastry used for display cakes.
STYROFOAMInedible peanuts
STYROFOAMDisposable cup material
styrofoam(tradename) a type of expanded plastic made from polystyrene
styrofoamA kind of expanded polystyrene