geothermal power station dyson sphere

Small electronic displays​

Electric toothbrushes​

Small pumps (for pumping water)​

Temperature and humidity sensors​

To recharge the power bank for a second charge to create a "mobile power transfer station" for camping​

To power LED emergency lights to deal with sudden power outages or dark scenarios during camping​

To power electric inflatable pumps to quickly inflate camping air mattresses or inflatable sofas​

To power wireless microphones to enhance the interactive experience of collective activities during camping​