Either ripping out the compressor and coils out of a couple mini firdges and building them into a larger insulated box. Or just taking the doors off of the mini fridges and mounting them on both sides of the insulated box. It makes it so that I can basiclly make a fridge just about any size that I would like. I am actually planning on doing one that is 6 to 8 feet long. My only problem with this is that I have no idea how to do the doors on it.