I made my own! It works pretty well and was simple to sort. A little £5 LED torch and an old camera film canister. Remove the lid and cut off the bottom of the film tub to make it into a small plastic tube. Slide the tube onto the end of the torch and if its not a tight fit then simply add a bit of black insulation tape. Hold the egg up to the end of the tube, switch on the torch and if done in a darker than daylight room I can see as well as a friend can with his purpose made candler!!