1.electric light switch 2. dc motor switch 3. sound activated switch 4. adjusting sound level 5. lamp and fan in series 6. lamp and fan in parallel 7. light emitting diode 8. one direction for LED 9. conduction detector 10. space war alarm combo 11. flying saucer 12. decreasing saucer lift 13. two speed fan 14. the fuse 15. musical doorbell 16. momentary alarm 17. alarm circuit 18. laser gun 19. space war 20. light police siren 21. clap sounds 22. voice light diode 23. motor space sounds 24. space battle 25. motor controlled sounds