Olimex Ltd is hoping to make it possible to sell a Do-It-Yourself laptop powered by a 64-bit ARM SoC. Olimex has been working on the OLinuXino OSHW Linux laptop that's an open-source ARM hardware design and would be powered by an Allwinner A64 64-bit SoC.
They just received samples of their plastic body design for the laptop itself. While a pure plastic laptop is worrisome, they claim that "the plastic parts [are] very good!" They have also sourced the battery, LCD display, keyboard, and other components.
They still are working to fit a motherboard in their plastic laptop, but they are looking at possibly selling a Do-It-Yourself kit where you can build your own laptop out of the parts.