Could you replace the regular routine of hand misting and using a localized dripper by creating a "rainmaker?" By rainmaker I mean a rubbermaid container or a 5 gallon bucket, a submersible fountain/aquarium pump, and some pvc pipe. If you drilled some holes in the pvc and ran it over the top of the enclosure water would drip out creating somewhat of a shower. You would have to keep the pressure in the pipe down so the water drips out and not shoots out, this could easily be done by recirculating the undripped pressure causing water back into the resevoir(sp?). Seems feasible and more natural than misting systems, misting bottles and localized drippers. Pretty cheap too, the most expensive thing would be the pump. Maybe I'm wrong, and it's obviously not efficient for larger scale growers, but for small scale keepers with a good drainage systems would a couple 15-30 minute rain showers a day rival a misting system?