I waxed and PVA'd a cardboard postal tube to wrap carbon fibre around. This will form the vertical tubes to store my wheel chocks and since the in-service loads will be mostly vertical, a wall thickness of three layers will be enough. I swept the floor and weighed down one one end of the carbon twill weave. Then I pre-wet the tube and rolled the layers on tautly as I applied resin. When this sets, I'll cut the tube in half and soften the cardboard in water to help with extraction.