Well, if you really want to get fancy there are rackmount cases available! But all you need is a very small tower or desktop case, maybe add some padding around it (spray adhesive and closed-cell foam from a camping supply store or neoprene mouse pad material) for bounces, and a good handle. Look around a bit and you can find Anvil-type cases of all kinds...one will fit the computer and perhaps a second one to fit the monitor. Or use a well-padded old suitcase! They make small monitors, like 9" sizes, too, which are great for packing with you.