Don't call me on my analogy, but have I mentioned before how I am a big fan of the ballet flat trend? I hope it sticks around. More dressy than flip-flops, but less than heels. (It keeps my feet cleaner than flip-flops too!)
Click on shoe for link.
Rocket Dog String Bean Slip-On: (I have these!)
Gap Leather Fitted Ballet Flat:
Nine West Gaelle Flat: