Lidl are selling swimming woogles at £1.99. They are approx 5ft long. Woogles are foam tubes that are used as swimming supports in exercise classes and for those learning to swim. They can be cut into 2-4" cylinders and used to replace expensive 'builder balls' to make temporary frames over brassicas and fruit using canes.
Swimming woggles are on sale at my Poundland shop for a pound :)