I've had a go at adapting bits for a bowlfire guard,didn't want to spend too much and didn't go the way of the chrome fruit bowl so this is the economy version, it does the job of keeping the cat from toasting itself...at less than a couple of quid each http://www.ebay.co.uk/itm/6-X-12-30CM-GREEN-WIRE-HANGING-BASKET-ROUND-BOTTOM-BASKETS-PLANTER-CHAIN-/160701015634?pt=UK_Home_Garden_Garden_Plants_Pots_Window_Boxes_CV&hash=item256a86e652
Its not perfect but does the job, The BBF is never going to be a rare heater and looking at the cost of having a guard made it would cost more than the price of the heater itself , safety wise i like a guard in place