Dark Souls Bonfire Lamp
I used one of these flickering white LEDs: Warm White 5 mm Diffused Candle Flicker LED.
And just wired it up with an old AC-to-DC transformer I had laying around.
IMPORTANT: If you are going to be putting an LED inside of it, I recommend using transparent orange PLA and then when printing Fire.STL print WITH supports at 0% infill. That's right, NO INFILL. I printed with 2 shells and it came out great.
Thank you to thingiverse user: Cob for designing Reinhardt Jet Fire which I modified and used for my fire.