S4 E1: Plastic Bottles and Jars, Mail, Eggs, Handcrafted Wooden Pens

S4 E2: Plastic Injection Moulds, Automotive Oil Filters, Filing Cabinets, Blown Glass

S4 E3: High-Precision Cutting Tools, Stained Glass, Semi-Trailers, Recorders

S4 E4: Conga Drums, Metal Plating, Buttons

S4 E5: Grinding Wheels, Compost, Window Blinds, Milk

S4 E6: Brushes and Push Brooms, Blackboards, Smoked Salmon, Zippers

S4 E7: 3D Commercial Signs, Hardwood Floors, Corrugated Polyethylene Pipe, Mattresses

S4 E8: Ceramic Tiles, Nuts, Steel Forgings, Skateboards

S4 E9: Car Engines, Flour, Recliners, Envelopes

S4 E10: Plastic Cups and Cutlery, Special Effects Makeup, Gold, Harps

S4 E11: Countertop Laminate, Frozen Treats, Children's Building Blocks, Detergents

S4 E12: Architectural Moldings, Pulleys, Industrial Rubber Hose, Sheet Vinyl Flooring

S4 E13: Putty Knives, Garage Doors, Electric Motors, Wool