My '1000 followers reached' post received 0.61 SBD rewards, so the total prize is 5.305 SBD.I used https://steemd.com to get a list of all upvoters, and https://www.miniwebtool.com/random-picker/ to pick random winners, so here are the results:
It's not much, but I hope it helps. Congratulations to the winners!