Plastics are a good electrical insulators because they are insulators. Electricity could not pass through them unlike copper. Another good example of insulators is rubber.
Blankets are defined to be insulators.
There are a number of materials that make good thermal insulators. Blankets and pockets of air make good thermal insulators for example.
plastic, paper, wood, cardboard, and rubber are all good insulators
If they are dry they would act as insulators.
Feathers are good insulators because they trap air. Motionless air is a very good insulator.
diapers are good insulators because they hold in the cold and and heat but is a bad conductor
Good materials that are used in soundproof ear muffs include polyvinyl chloride and polyurethane. If ear plugs are desired the best options are moldable wax or silicone.
spongespaper towelglassduck tapesawdustmetals...these are excellent insulators.....
Maybe just the celing and floor?
No, most gases are good insulators. Fluids can be good conductors. Mercury is normally a liquid and is a good conductor.
Insulators are the complete opposite of conductors. Insulators insulate the heat, but conductors let it pass straight through.