A La Maison Ceilings Spanish Silver Van Deusen Blue 1.6 ft. x 1.6 ft. Decorative Foam Glue Up Ceiling Tile (21.6 sq. ft./case) R139-8vdb - The Home Depot
Amazon.com - Con-Tact Brand Creative Covering Self-Adhesive Semi-Transparent Privacy Film Protective Vinyl and Shelf Liner, 18" x 20', Clear Matte Acid Free
The best glue for polystyrene - Adkwik - Adhesives, Abrasives & Sealants
Chestnut Grove Glue-up Styrofoam Ceiling Tile 20 in x 20 in - #R 31 - Pack of 96 / 259 sqft
28A - Polystyrene adhesive - Soudal
T-88 | Structural Epoxy Adhesive - System Three Resins