① Is the boxing reflex ball headband an appropriate gift for an 8-year-old?

Yes! It’s great for eye-hand coordination! Bonus it gets the kids away from playing video games or watching YouTube all day!

② Is the boxing ball more of a toy or an actual boxing training product?It's an actual boxing training product if you choose for it to be. It's great for eye-hand coordination. FYI it's not as easy as it looks. You can watch YouTube videos of pro boxers using products like this. BTW, it is also fun for kids as well. 

③ Would this be something that an elderly person could use.....either seated or standing?
Sitting or standing would not matter, but even with the black ball, you would need some quick reflexes. But it does not hurt if it hits you.

④ Can the ball hit back my face?
Yes, it will, and you might 'face' (get it?) a grizzly death as a result. Or, because these reflex balls are so incredibly light, that even at full speed return, they wouldn't hurt a Teacup Poodle.

⑤ It's not that easy as I thought. How can I get the hang of it?
When using it, of course, you’re not gonna get the hang of it at first. But practice makes perfect. Start slow one punch at a time to get used to the balls movements, then as you practice more you’ll get used to it and will start connecting more punches. 

⑥ It looks interesting, but what exactly is it supposed to do for me?
Improves your reflexes like slipping a punch also great for working on your timing like hitting a double end bag. It’s great for hand eye coordination, speed, and family challenge time. 

⑦ Do you have to wear boxing gloves or can you just use your fist?
Just use your fist. Boxing gloves aren’t required, and it would take away from the workout using this product.

⑧ Can I adjust the length of the string?
Yes. You can adjust the length by twining it around the headband.