How do you power the LEDs? Did you include batteries?
I very seldomly DIY things beause I'm not that skilled.
The one I own has a single rechargeable battery. The ones I make to sell uses a single disposable lithium battery, just because it is cheaper/easier to make.
This caught my interest because my kids keep asking for hula hoops (hoopaloops) and these look like they'd be taken care of better than the cheap plastic ones that keep ending up outside and breaking.