A propane grill, I tell you Hwat.

The kind that requires this implement:

spoiler

I'm a fire performer. Slow motion, high framerate shots of anything involving fire in the dark are absolutely gorgeous. Every flame is beautiful, you just have to know where to look. My favorites are candles and lycopodium.

Personal favorite form of combustion is fire eating. I used to fire eat on the cast at Coney Island. There's a lot of vapor tech you can do that is straight up witchcraft, like hiding a flame inside your mouth.

I've done a lot with various forms of fire, ama

This: https://en.wikipedia.org/wiki/Rotating_detonation_engine

The one that burns the heretic, kills the mutant and purges the unclean!

The emperor protects!

I think my favorite form of combustion is the slow and gradual oxidization of all life on this planet that leads us all towards inescapable death.

It happens so slow that it can take 120 years to finally burn you to a crisp, but it will always, always destroy you, and there's nothing you can do to escape it.

Butane lighters where it's under pressure and comes out like a little jet engine. It just makes my inner 12yo boy smile.

The spontaneous kind.

Friction.

Be super hot to rub two dicks together until they ignite.

No. That isn't a typo.

Deflagration-to-detonation transitions are pretty cool but my all-time favorite would be acoustic strobes.