You can build a number of things in the gigantic Sandbox game Minecraft, including a gigantic floating Macintosh computer. Flickr user Caius Durling designed this floating replica in his Minecraft world. He put it together pixelbrick-by-pixelbrick and added a floating "Hi".
It's pretty impressive. LIBERTYCM " on the Minecraft materials isn't good enough to display the Mac OS running on the machine, but he did get the dimensions right, and he even put the handle in the back. It's all you need is a single button mouse.