Depending on your interests and timeframe, here are some ideas:
- Teach them about color theory with three flashlights and a red, green, and blue gel taped over each one. Then, kill the lights and show them how additive color turns things white. For added fun, bring a water bottle and red, green, and blue food dye. Dye the water black with the dyes to show subtractive color... then chug the water and "die on stage".
- You mentioned drones... literally just bring a drone.
- Buy a some piece of wood from AC Moore and hot gun some components and a battery pack to simulate how electricity flows (battery to switch to led to battery). Add some permanent marker to point out the components
- I once bought an LED foam sword from Wal-Mart and took it apart in class to show the same thing as the LED board suggestion
- In a similar vein, any kids Arduino/Raspberry Pi project
- You also mentioned photography, so if you're willing to have kids touch your camera equipment, you could show them different ISO/aperture/exposure settings
- There are also Scratch/Snap!/CodeCombat exercises out there
- Teach them about color theory with three flashlights and a red, green, and blue gel taped over each one. Then, kill the lights and show them how additive color turns things white. For added fun, bring a water bottle and red, green, and blue food dye. Dye the water black with the dyes to show subtractive color... then chug the water and "die on stage".
- You mentioned drones... literally just bring a drone.
- Buy a some piece of wood from AC Moore and hot gun some components and a battery pack to simulate how electricity flows (battery to switch to led to battery). Add some permanent marker to point out the components
- I once bought an LED foam sword from Wal-Mart and took it apart in class to show the same thing as the LED board suggestion
- In a similar vein, any kids Arduino/Raspberry Pi project
- You also mentioned photography, so if you're willing to have kids touch your camera equipment, you could show them different ISO/aperture/exposure settings
- There are also Scratch/Snap!/CodeCombat exercises out there