Unless you frequently game on your PC or you have extraordinarily strong fingers, chances are your old computer mice still work. The folks at The Unconventional Hacker have figured out a way to transfer more modern guts to an old wired mouse, turning it into a wireless Bluetooth mouse.
The Unconventional Hacker sacrificed a cheap Bluetooth mouse to revive a 1986 Apple Desktop Bus mouse, but as Lifehacker noted, there’s a good chance you can do this with other mice as well. Basically you need to transfer the motherboard of the newer mouse into your older mouse. This might require a bit of improvisation on your part, but that’s what tinkerers live for. You gotta work hard for the privilege of using a one-button mouse again.
Head to Instructables for the full how-to. And for the love of right-click, do revive a mouse with at least two buttons.