We recently discovered Lime Rickey’s at our local Artic Circle.  If you haven’t tried one, you should! They are so good!
The other night while fixing dinner we wanted to see if we could
make our own. 
Basically you just make grape kool-aid, add a lime and some 7-up or Sprite.

It was pretty good!  In the future I think our Kool-aid ratio will be less per cup though.