Didn't use them on my BRe, but I recall IKEA sold them pre made, "styles to suit all budgets", but sizes to suit Swedish furniture. We had in the house some fancy bent beech wood ones (which made them relarively light and springy), with nylon webbing straps lacing them into a preformed roll. Looked rather like a nicely finished garden fence. Might suit?
They are easily alterable in both width and length (if they are wide enough?).