Can I buy one from an electrical shop or a hardware shop, online - what are they called?

puzzled, November 2011

homebase do ones for xmas dec's which should work just as well ( clear rubber suction cups with hook)

chris b, November 2011

go to any car motor factors ask a valve grinding/ lapping stick it a piece of 3/8" to 1/2" dowel with rubbers on either end.
when you get one wet the rubber lip,now press on to bulb glass, now pull gently downward. or may have to fit to glass and then rotate valve stick anti clockwise,it really depends what type of bulb has been fitted

wirecutterman, November 2011