3D Scanner, Label Cutter, Desk Organizer, Robot Arm.
- 3D Scanner: Use stepper motors, laser line, camera, Arduino.
- Label Cutter: Reuse stepper motor, add cutting blade, control via software.
- Desk Organizer: Remove internals, keep trays, use for stationery.
- Robot Arm: Salvage motors/gears, connect to Arduino, simple robotic movements.