1) Live in any fictional fantasy world you'd love to with a renewed mind and body.
2) Have 500 billion dollars, but you have to listen to Daft Punk's Discovery album at least once every week.
3) Every horse on earth becomes a 2D-3D cutie pony which is capable of creating their own society. You may or may not see your favourite characters.
Open the box and see what's inside.
1 is all I'd want anyway.
2 matters not, I'm not interested in money, it can only do so much.
3 sounds nice, but I'd rather not have the ponies deal with the inevitability of humans hurting/exploiting them.
I'd also rather not get fucked by curiosity with the box.
i'd sacrifice a virgin to see what's in the box
1) My choice of the multiverse and the restoration of a rapidly declining body? Money doesn't buy time, a universe where the mysteries of biological renewal for humans is easily available does.