It's actually down as a naval item, but if you love the target design, this Nautical Flag cushion should be right up your street.
According to the blurb, this large cushion comes has a code flag design (aka square target) on the front and a plain red back. The cover is a durable 100 per cent cotton canvas and easily removes for cleaning, with the pad included as part of the deal.
Price? A fairly reasonable £30 from the online National Maritime Museum.