1. Packaging: Protects electronics, glassware, and appliances during shipping.
2. Construction: Used as insulation boards, lightweight fillers, and soundproofing material.
3. Food Industry: Common in disposable cups, plates, and food containers.
4. Crafts & Models: Used in art, decoration, and model making due to its easy shaping.
5. Marine Applications: Provides buoyancy in life vests, rafts, and floating docks.