I almost always have shrimp on hand, but you could use a flaky whitefish, salmon or even chicken. I had shrimp, so I cleaned them up and let them marinate in some lime juice and 1 clove of minced garlic. While those were sitting, I made this easy slaw (the same slaw I use for fish tacos) and then sliced up some raw veggies.
To sauté your shrimp, heat 1-2 T olive oil on medium heat, dump in the shrimp and let cook for about 2 min. Flip them and let them cook 1 -2 more minutes, depending on their size. You don't want to overcook shrimp or it will become rubbery. When they turn pink, they are done. Remove them from the heat, they'll continue to cook through.
When the shrimp were done, I layered all of this down the center of a crepe, folded over and ate. Easy and different! And now I know how to use up extra crepes!