I have had 1 7 day streak, and my wife has had 1. neither of us got an evo item.
I have gotten 4 evo items. all from regular pokestop spins.
1 at the pta bot gardens, we drove past I spun the stops in range from the parking lot for both me and the wife, I got an item she did not.
1 at my office
1 at the spar close to my house, again, the wife spun the same stop at the same time, and did not get one.
the other I got at the News Cafe in Centurion while walking for lunch one day.
my wife works on a pokestop as well, and spins more than I do due to having a pogo plus. she does not have a single 1.
all of the stops where I got and she did not, she only got 3 pokeballs, I got 1 pokeball, 1 ultra ball and 1 evo item.