This weird-looking open-sourced computer mouse has four buttons plus a point stick which reminds me of IBM's legendary red nipple joystick

Ploopy Bean.

• Ploopy transformed the classic ThinkPad pointing stick into a standalone desktop controller
• Ploopy Bean uses magnetic sensing hardware, capturing 20,000 samples per second
• Open-source firmware allows complete customization of every button and function

The computer mouse has splintered into countless variations over the decades, yet the pressure-sensitive pointing stick has remained stubbornly obscure outside a devoted circle of users.