He does a lot of things actually, only tonight I saw a video of him playing the Top Gun theme (from the movie) he'd taught himself to play on his violin...at five and a half years old! Lol. It was pretty terrible...but one could make out the song; he wants to be a fighter pilot so loves Top Gun. 

He's doing en enduro in a couple weeks, on his bike and a few other things are coming up. He has a diverse set of interests like drone flying, Lego, drawing, biking, the beach (his mum and dad go kite boarding there all the time), kayaking with mum and dad, likes off-roading, camping and...well, he does all sorts of stuff. It's cool. 

But yep, as you say...a kid with a bike is often a happy kid.