Ubuntu icon suggestions?

Hello all. I'm in desperate need of a new icon set. I've tried everything; Faenza, Elementary, Piratunbu, Potenza, but all of them feel a bit sketched and childish to me. At the moment I'm using Matrilineare, but I'm not really that happy with it either. I'm looking for something 2D, minimal, a bit like the Google JFK Android icons if you've ever seen those. Any help would be much appreciated.