### Tools

- Cutting tools (scissors, craft knives)
- Ruler
- Small nozzle (for injection machine)
- Wooden rod (filament winding)

### Hardware

- Injection machine (plastic processing)
- Cylindrical object (spring shaping)
- Flat sheets (plastic pressing)

### Materials

- Metal wire (springs, ~20 cm length)
- Paper sheets (A4, 8.27 x 11.7 inches)
- PP shredded bottle caps (colored filaments)