Somewhere between The Amazing World of Gumball and Overwatch my youngest son (he's not so young any more) builds Gundam models. Back in my day it was the Spitfire and Chieftain Tank that we assembled from Airfix kits bought from that model shop up on New Street. For Seth, it’s Mecha – equally complex, but shipped over from Japan.
If you lived in Japan, these amazing model kits wouldn’t cost you too much – a few week’s pocket money maybe, depending on which side of the Bullet Train tracks you were born on. We have to stump up for shipping but they are undeniably cool, so money (and time) well spent I say.
Seth's building quite a collection now and is really into the TV show they derive from.
The models take time to construct and (forgive me for sounding predictably parentist) in our age of fast gratification, that's a very pleasing thing to witness.
They're also awesome to photograph.