The best glue for polystyrene - Adkwik - Adhesives, Abrasives & Sealants
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
Grid-Lined Foam Display Board, Paper-Laminated Polystyrene, 30 x 20, White Surface and Core, 2/Pack - Supply Solutions
Foam Core Backing Board 3/16" White 11x14- 25 Pack. Many Sizes Available. Acid Free Buffered Craft Poster Board for Signs, Presentations, School, Office and Art Projects - Walmart.com
3/16" White 1 Side Self Adhesive Foam Core Boards :11X14
Graphic Display Products
Chem-Set TrimGrip PVC Trim Adhesive | Chemical Concepts
A La Maison Ceilings R24 Line Art Glue-up Styrofoam Ceiling Tile (129.6 sq. ft./Case), Pack of 48, Rusted Steel - Amazon.com
Elmer's Clear Washable School Glue 5oz
ORAC DECOR 1-1/2 in. x 1/2 in. x 78-3/4 in. Primed White Plain Polystyrene Crown Moulding (32-Pack) CX160-BP - The Home Depot
Amazing GOOP 130012 Household Adhesive - 3.7 fl. oz. - General Purpose Glues - Amazon.com