Reddit reviews Woodland Scenics Hot Wire Replacement Wire 4' WOOST1436

Yes. 6V across a 10 ohm resistor is 3.6 Watts, but due to the internal resistance of the battery itself this will probably be more like 2.5 Watts. If you use a resistor of sufficiently small wattage (.25 Watts, for instance) it will heat up rapidly and may catch fire within a few seconds. Many film resistors can catch fire. It should work with a 9V battery as well.

However, if you want more of a sure deal just use something designed to work the way you want, like a model rocket igniter. But you do not have to make your igniter actually catch fire, as long as it gets hot enough to ignite your firecracker fuse, or whatever. A loop of nichrome wire would be enough to do this.

You want something like this. Order it there or check out your local hardware store.