I can't find any evidence that the Easy Bake oven used a "special" light bulb. It just used 2 normal 100 watt incandescent bulbs as far as I can tell. Tungsten is a normal resistive heating element, pretty common in electric furnaces.
https://upload.wikimedia.org/wikipedia/commons/1/1e/Premier_...
Though there was a 2006 redesign that apparently didn't go well: https://www.cpsc.gov/Recalls/2007/new-easy-bake-oven-recall-...