A common composite sandwich structure used every day by people in coastal cities across the world are surfboards. Generally, a shaped polyurethane foam core with a wooden stringer, is laminated by multiple layers of 12oz or 14oz 0/90 e-glass fabric, using a vinyl ester resin.
In recent years, more advanced composites are being integrated into surfboards, below is a video on how lightweight windsurfing boards (aka composite sandwich structures) are made using aerospace grade materials.