Ozarka brand bottled water sells 1 gallon bottles of "spring water" in clear plastic jugs. I have found that if you cut off the top or bottom of the jug (user preference), it makes an excellent mini/micro greenhouse for small cps such as vft, sundews, etc. when growing under artificial lighting. I don't know about direct sunlight, but the heat build-up would probably be too much for the plant inside unless it was filtered sunlight.
My $0.02 worth.
My $0.02 worth.
