It would have to be action figures and I have no idea which characters from games, if any, companies produce.
I would imagine a Geralt figurine would have gone down a treat and me and my brother would have killed for a set of Evolve monster toys, my word, I wonder if they'll make them.
I had the same thought when I saw that Mario Kart in a store. What I wouldn't have given to have one as a kid.
They just generally make a lot more Nintendo toys in general these days. I have a Link action figure I paid 10 dollars for on my desk. Back in the day, those would have been more expensive and considered collectible (like the very old collectible Ocarina and Majora's action figures I wanted so bad as a kid)
Amiibos. Mine just sort of sit on my desk looking cool. I can see myself putting investment into training them up to fight against other people's if I was younger.