PORTABLE CHARGERS THAT ACTUALLY WORK

1. FOLDING SOLAR PANEL WHEN ITS SUNNY OUT

2. A THERMOCOUPLE BOLTED TO THE BOTTOM OF A SOUP POT

3. GARBAGE

4. LITERAL TRASH

5. NOTHING, NOT EVEN ATTEMPTING TO CHARGE ELECTRONICS IN THE FIELD

6. MECHANICAL MEANS OF POWER GENERATION SUCH AS WIND/WATER TURBINES OR PEDAL STATIONS (ID RATHER PEDAL A BIKE MORE)

7. REGENERATIVE BRAKING ON AN EBIKE (WILL NOT CHARGE ANY ELECTRONICS BUT HEY -- NEVER REPLACE BRAKE PADS EVER AGAIN)