i believe you could use wood when you dont have styrofoam
Some people, to be cautious, boil water and add, instead of nuking. Others use a glass bowl to nuke, instead of the prepackaged styrofoam cup. See also the attached Related Link.
Lunch boxes could use any type of insulation, most lunch boxes use a flexible based Styrofoam with a plastic coating to prevent the disintegrating of the Styrofoam.
Styrofoam works best!
you could use styrofoam like my group used
you could use wood, Styrofoam, cardboard, or paper.
styrofoam
You could use any light-weight modeling substance, or you could carve one out of thick styrofoam.
We could use leather instead.
Styrofoam, wire, cotton buds and paint
This depends on what you are trying to use to dissolve the Styrofoam. Gasoline will dissolve Styrofoam. Water will not.
You could not use lightning instead of batteries.
You could use a wooden block, a Styrofoam cone, a birthday party hat... anything like that.