Im with u guys in ur boat of urs. mostly because i need to grow some this winter. the closet is not an ideal spot to grow if your in my position with parents probing around in your room. although u could make it disguised as a suitcase or something, it would be a lot harder then finding a small spot in ur adic, everyone has one unless ur roof is flat or u live in a nice fancy house with slanted ceilings. most people, like me, have a main attic, in the garage, and then a secondary one above the main house part. That would be the best. Im thinking about building 2 wooden boxes out of oak (because it will retain mousture better) about 2 feet wide, around 3 foot tall (or however tall ur type of plant will get) and putting them in this old suitcase. The key is getting ventalation. computer fans are a good idea, going to have to do some a/c wiring witch will risk a short, i.e. fire, just make sure u know what ur doing on that part. then get some nice small growing plant seeds, ill do ice because ice is my favorite, then fill the bottom of the box with nice homeade compost/ decomposed leaves but make sure u either put a couple coats of polyurathane under the compost or a garbage bag so the wood doesnt rot. i would use treated wood cus it might seep into the soil and fuck up ur dope. i dont know if polyurathane would affect the quality of the weed but look it up. put 2 lightbulbs in each box i have no idea what type u need im sure tons of people will put in on here,then make sure u get some of those silver flexible ducts like 2 or 3 inches wide and vent them somehow(out a window) build a little pvc chamber in them to hold ur carbon filter, and BAM! weed in a box. happy growing, dont get caught. also a small control panel would be ncie if u knew anything about electronics, couple light switches and timers are all that u really need, along with fans and if u wanted hydro watering systems, good luck fiting that in a suitcase.