We have a set of fixed length metal skewers, I think they were $4 at our local Ace Hardware. Two reasons - hot dogs (can cook 3 or 4 on one), and our kids are completely disallowed from using sharpened sticks around the fire. They end up turning them into 'torches' and with their 'torches', they've rendered two camp chairs, two jackets, and a pair of pants useless. My wife and I have too many burns from their 'torches'. So, we use the metal ones, burn the food residue off, and shove them into the dirt or some sand to cool.
I'm hoping that by the time they break, the 'no torches' rule will finally have sunk into their heads. Technically, given the ruined things above, the metal skewers have actually saved us money.