Ahhh. I bet that also gains you some coolth.
Your intermittent mist setup would let you make an extra-simple air-mist-cloner, by running some mist nozzles or a low-flow mini-jet sprayer into a dark plastic box, aimed up at the cuttings and roots. Then you would have to make a cover to keep light out and support cuttings. I always thought that notched slats ought to suffice for thqat, but I never tried.
It would have to let excess water drain out, or you could dump it periodically.