I'm looking for ideas, concerning 8 year old science fun

Do you have a HAM operator's license?

If not, you can both study together and take the test(s).

Buy some Baofeng radios. Teaching a nice skill and possible hobby.

great site for testing info.

[link to hamradioprep.com (secure)]

This Baofeng is a great start, and can be "unlocked".

[link to www.amazon.com (secure)]

We've purchased a ton of these and give them out to friends and family.

Take movies with a drone?

Take movies with a drone?

Before she got too old and cool to hang out with us old grans we used to drive halfway across the country and back to pick up the oldest grandkid for the summer every year. She also liked science and I like crafting so I tried to find things that sort of fit in the middle.

The biggest hit was making bath bombs. Not only is it hands on ( digging your hands in for mixing and filling molds) but we all got to use them for bath time all summer and they make a really cool reaction in the water. We experimented with different recipes, colors and scents and she got to bring some home to use and as gifts when we brought her home at the end of the summer.

Magnets, build a rail gun or a mini magnetic train

Fireworks was a good idea

Little late but gardens are cool

Both take guitar lessons

Fishing is always great, alligator gar are big, ugly fish. Good to eat

Tesla experiments are cool

Large magnifying glasses are cool. Melt metal and anything else

Make a solar oven and cooks some hot dogs.

Magnets, build a rail gun or a mini magnetic train

Fireworks was a good idea

Little late but gardens are cool

Both take guitar lessons

Fishing is always great, alligator gar are big, ugly fish. Good to eat

Tesla experiments are cool

Large magnifying glasses are cool. Melt metal and anything else

Raspberry pi controlled robot catdog.

Last drone I bought had video, but neither of us could keep it airborne long enough to do anything useful, although a rocket launched camera would be interesting

Scientists don't make money you want your kid to be a lawyer, cryptofiend or economist. Buy then some dodgecoin or something better to be a curious rich guy. Science is worhtless

I highly recommend the See Inside series of books for children published by Usborne. All topics are covered from science to history: [link to usborne.com (secure)]

[link to youtu.be (secure)]

Build a robot like in robot wars

Let him design how he wants it to look and his weapon of choice

I too have an advanced child. We probably did most of what's listed here by the time he was 4. I suggest making fireworks since it's approaching the 4th. Get some ball shell casings and fuse, tubes, and the lift comp, and make the break comp by mixing the chems you order in the correct proportions. You can easily make rockets too, rocket fuel and smoke comp are just potassium nitrate (stump remover from homedepot) and white sugar. Other than that Arduino!! Tell him you need to monitor humidity levels somewhere and help him assemble and program an arduino board with BLE humidity beacons or Haltian BLE distance sensors or BLE presence sensors to open chicken coop doors or turn on barn lights or something outdoorsy/farmy. Good luck.