Millennials’ favorite childhood toys have become a billion dollar market again, thanks to good ol’ nostalgia. My Little Pony and Transformers have become major earners for their brands in the wake of their entertainment reboots. My Little Pony figurines reportedly reached a billion dollars in sales last year, and a Pony movie is set for release in 2017. Jem and the Holograms and Star Wars will be the next to get screen time, and then their fair share of branded products. (Yahoo)