Can a cable tray hold a power strip and a laptop charger brick?

Most clamp-on metal and fabric trays in this roundup are rated for 10–15 lbs and can hold a standard power strip plus several adapters. Plastic adhesive J-channels typically cannot — they're sized for cables only. If you want everything off the floor, prioritize a tray explicitly marketed as a 'power strip holder' with a closed back or basket shape.