Molten wax can be a fire hazard especially if it comes into contact with water. It can however be heated gently to a liquid state if done so with the residual heat of recently boiled water.
The flash point of paraffin wax is roughly 200 degrees Celsius or 390 degrees Fahrenheit. The surface of a 60 watt incandescent light bulb heats to 116 degree Celsius or 240 degree Fahrenheit. Assuming these crayons are made from paraffin, this bulb should not ignite the wax.
Using my hands to cover the bulb with the molten orange crayon, I sculpt what should look at like pumpkin but actually resembles a tangerine, far more sinister. At this point I will mention that I am neither going to leave this unattended, nor lean over the bulb once turned on.
Intriguingly, the residual crayon left on the bulb now resembles the surface of the sun, even with convincing solar flares.
I left the bulb to cool before dismantling and throwing it away.