The VIA APC is a tiny computer with an 800 MHz ARM processor, 512MB of RAM, and 2GB of storage. It includes HDMI, VGA, USB, and Ethernet ports and sells for $60 at Newegg (with free shipping).
One thing it doesn’t include is a case. Like the Raspberry Pi and CubieBoard, the APC is sold as a developer board, which means the motherboard is exposed to the elements.
But there are some third party cases available for folks that don’t want to build their own.
One of the nicest looking options I’ve seen is Mike Thompson’s laser-cut plastic case. It’s custom designed for the APC, holds the board in place, and includes cut outs for the I/O ports.
It’s also designed for easy assembly. It snaps together and doesn’t require any glue, screws, or fasteners.
Thompson is selling the case for $20 and charging $5 for shipping. Unfortunately the store front is down at the moment, but you can read more about the project at the APC forum.