Kit Space (formerly called Kitnic) is a registry of open hardware electronics projects that are ready for you to order and build. It could be described as a "Thingiverse for electronics". Click on any project to get further info, download the Gerbers and see the bill of materials.
Click once, order everything.
They sell newly manufactured Commodore cases, newly printed Commodore decals and labels (to replace damaged or missing ones), keyboard brackets, and miscellaneous 3d printed parts.
They sell replacement parts, refurb kits, and some upgrades for classic computers.
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store atari parts software games buy purchase
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A site that sells replacement parts for laptops, including LCD screens.
An online store that specializes in spare parts for and discount UNIX servers and high-end workstations. They have machines and parts for Sun equipment, Dell, HP, Rackables, and Supermicro. A lot of this gear used to be horribly expensive, so hobbyists and sysadmins on slim budgets often have to search long and hard for replacement components. Try starting here.
electronics raspi raspberrypi parts screen eink
An open source DIY robotics/rapid prototyping kit much like an Erector set. Lots of standardized pre-milled bars, rods, connectors, and components. Build your own plotter, CNC machine, RepRap, scanner table, or what have you. Capable of three axes of linear motion. Comes with all the electronics you need, including an Arduino, stepper motors, and a motor driver board.
A wiki of ways to fix things, including teardowns, where, to get parts, video tutorials, and diagnostic procedures.