I posted this in another link but figured I'd share w/all if they hadn't read that link! I've even used a "Pringles" potato chip can slid over any lamps light bulb(lamp shade removed) with an oval cut out of the bottom just a hair smaller than egg size so they can't fall through. Works great but do it in dark room to intensify what you're seeing, it makes all the difference if done in the dark! The pringles can fits snuggly around standard light bulb and has foil type interior insulation which seems to prevent any fire hazard. I've had the light on for quite some time w/60 and 75w bulbs w/ no problem. Its a cheap but efficient way of canseling and only costs about a buck, but you also get free chips then also!!!!!