Dichondra looks great between flagstones, and it's even a great lawn/grass substitute if you have a somewhat shady lawn that doesn't get much traffic - a lot of front yards fit that bill! It's lush and green, and it only gets about as tall as you see in these pictures so you don't have to mow it! Saves you time and energy for an easygoing life! And, oh, it looks pretty cool, too!
Top image from FarnsworthLandscaping.com, bottom image from BloomIQ.com