I've been surprise trading a lot since I have a side quest to collect as many of the international entries as possible, and I've got a few decent ones lately. But oh my gosh, please no more Eevees, Charmanders or Sprigatitos. I've got a Charmander in nearly every ball (including apriballs).
Some of the better things I've gotten: Paradox ones, Johto Wooper with the original rare candy still held, gourmand marked Sprigatito, foreign fully hyper trained Ditto (don't think they'll pass down, but it's still cool to see), a Dunsparce that actually evolved into three-segment Dudunsparce, several marked mons, and a few fun nicknamed critters (one of my favourite things to receive on surprise trade tbh).
Some of the better things I've gotten: Paradox ones, Johto Wooper with the original rare candy still held, gourmand marked Sprigatito, foreign fully hyper trained Ditto (don't think they'll pass down, but it's still cool to see), a Dunsparce that actually evolved into three-segment Dudunsparce, several marked mons, and a few fun nicknamed critters (one of my favourite things to receive on surprise trade tbh).