Want to get some more mileage out of that old manual typewriter (and drive your co-workers nuts) – it's easy, just get the conversion kit from USBTypwriter.com and hook to your computers USB port.

According to the USB Typewriter website:

The USBTypewriter™ is a new and groundbreaking innovation in the field of obsolescence.  Lovers of the look, feel, and quality of old fashioned manual typewriters can now use them as keyboards for any USB-capable computer, such as a PC, Mac, or even iPad!  The modification is easy to install, it involves no messy wiring, and does not change the outward appearance of the typewriter.  So the end result is a retro-style USB keyboard that not only looks great, but feels great to use.

For those that don't want to convert their own typewriter, you can buy them already converted.