Someone else said the fireplace was electric. But had it been wood and routed into the engine intake it could in fact have added efficiency… feel free to fall down the wood gas rabbit hole
https://en.m.wikipedia.org/wiki/Wood_gas
My Brother laser printer counts toner consumption (i.e. page count) with a keyed gear on the toner cartridge, different cartridge capacities have different shaped gears, resetting the gear orientation resets the counter.
Or just generate 86400 gifs, each 86400 frames long, and have the server deliver the correct one depending on the current time. But that wouldn't be nearly as cool as generating and delivering the gif in real time.