Is fingerboarding a sport?
I don't know but here go some Tech Decks. These finger size skateboards are customizable with the tool you see there in the package. The deck part of the board is always colorfully decorated or themed...and...they've chosen Series 13 to do 2 with a Sonic theme! You can see Knuckles board there, which is marked for 'quite rare' with the red dot.

But interestingly, instead of Sonic, you get NEO Metal Sonic...so...is this the first merchandise that actually has him or only him on it? (Seems likely, as he wasn't a boss a whole lot of times, he's an uncommon character to begin with so this is actually very interesting) Why did they choose Neo Metal over regular Metal? Certainly, the choice makes the board more fun and interesting to see with a rare character like that. These are at Walmart, but they appeared during the COVID pandemic so who knows about their availability. 

TODO: Upgrade this post with photo's of the sonic district collection