So I was going through the list of items that the Deployer can use, and I found one that surprised me.
Guess what happens if you toss a flint&steel; into an upward-facing Deployer?
The Deployer won’t be destroyed by the fire, so hey, fire on demand!
Now there are downsides. The fire burns out after a while, and you can’t prematurely stop it (although a Block Breaker can do that). Also, it does slowly use up the flint&steel; inside, but you get a fair number of uses before you have to replace it.
Anyway, because I had so many passive mobs wandering around my test site, I built this:
Mmm, roast pig.