Yo-yos are the fad of the moment here and the kids I tutor are constantly practising tricks like the ever-popular “go up and down and then up and down again” and “make a loud whirring noise that annoys everyone within earshot.”
Here you see a (poor) picture of a high-tech Goku-adorned “Superyo” yo-yo:

The tacky factor is boosted immeasurably by an LED which lights up the clear blue plastic when the yo-yo is in play.
And here’s a picture of a yo-yo enthusiast’s custom-made yo-yo grip:

It presumably provides superior performance — mo’ yo for you.
Oh no. They’re back. Oh, the humanity!