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Cardboard or aluminum foil works to darken windows. Red colored lenses (ie: http://www.amazon.com/gp/aw/d/B00F2VJCQK/ref=mp_s_a_1_1?qid=1415230480&sr=8-1&pi=SY200_QL40) for trips to the bathroom can help keep you 3rd shift Circadian rhythm from being disrupted by white/blue lights. White/blue light absorbed by retina or skin will suppress your body from making melatonin. There is also an android app called twilight that will dim & red tint your screen(you just have to disable auto location and set it with a location on the other side of the globe). There are similar applications for PC's too.(aside from the light issues-Ear plugs will work wonders too.)