Hint: Made of plastic
The answer to this puzzle is:
1. TABLE
2. DISK
3. SPEAKER
4. PHONE
5. GADGET
6. COATING
7. BROOM
8. KEYBOARD
9. PRINTER
10. TUBE
11. SCREEN
12. KNIFE
2. DISK
3. SPEAKER
4. PHONE
5. GADGET
6. COATING
7. BROOM
8. KEYBOARD
9. PRINTER
10. TUBE
11. SCREEN
12. KNIFE