What device(s) will be providing gates to step the Mimetic into its next position? Will you be using a reset gate and where will it be coming from? The Mimetic has an input for Next and Origin... next of course is the next step available (looping back to 1) while a trigger to the Origin immediately takes you back to 1. You'll need these two triggers/gates especially if you're using patterns that are less than 16 steps.

As far as "cool patterns" you can use a sequencer with a gate out for sure. But also check out Euclidian generators, random generators, modules like the Trigger Riot, etc. I find creating patterns indirectly (influencing a pattern rather than picking it) helps get me out of my creative box.