fire throwing broomstick prop

Details on my broom prop for Wizard of Oz. It throws fire safe to use on stage. The video ended up a lot longer than I like, but there are a lot of good details in there.
1/4-32 nut, www.amazon.com...
glow plugs, www.amazon.com...
fire/flash cotton, www.penguinmag... (updated)
fire/flash paper, www.penguinmag... (updated)
broom has since been updated with an electrical clip

[@KevinLeoffler]

Where can I get the battery pack with switches. I’m new to prop making and this will be my first big prop