i got a kids gas mask off ebay Â£6.99 and a poseable lamp from a DIY store for Â£4.99. cut out the filter and thread the lamp thru the hose,put some tracing paper under the eye holes so you cant see inside it, mount it all on a bit of wood and mount to a wall. it sounds easy but its quite awkward.
done, thanks for looking
first on the gas mask i unscrewed the filter on the end of the hose, then using a hand held rotary tool cut it open removing all the charcoal and fluff thats in it. inside the mask you have to cut out a metal plate that is in front of the hose.
i also took the glass eye holes out and covered them with tracing paper and put them back in so you cant see the inside, i also thought about putting some LED lights inside so it would glow but i might do that another time.
i took apart a cheap lamp just unscrewing it and unthreading all the wires.
i cut a shield shape out of a bit of wood i had laying about (i think it was a bit of old skirting bored) to mount the lamp to.
then thread all the wires though and screw onto the mount and attach to a wall.