Torches pushed into Carved Pumpkins = Instant Jack o'Lantern

Pistons should be able to push a torch into a Carved Pumpkin, making a Jack o'Lantern. Simple, right?

A feature like this could be used for making Puzzle maps, making the Pumpkin light up when the player has completed a task. This could also be used to create a one-way toggle light, making a light source that cannot be turned off. It could even be used during the month of October to keep with festivities.

Yes, the fact that torches aren't push-able makes this a weird one to introduce. But I'm certain a workaround could be developed. This workaround could even go towards other combinations, like pushing a Hopper into a Minecart to make a Hopper Minecart.