Well I'd have a large enough case to enclose several motherboards etc. and then have all cables connect to a breakout panel to prevent weeping. As far as cooling goes, you simply pump the oil out of the case and down an inflatable slide/kiddie-pool. a pump at the end of the slide in the kiddie-pool returns the oil and completes the circuit. As far as cost goes, you simply have several women in white undergarments slip and slide down for several hours, wrestle, gyrate, and collect fees from onlookers in order to recoup the cost of oil and additional hardware. After several weekend the mining rig will more than pay for itself, even with several difficulty increases. Coffee filters can be used to collect any lost body piercings or hair scrunchies that my get lost along the way.