Wraps can be as versatile and unique as you want to make them. Throw in a little beef, and then go crazy with any combination of other fillings. To add a little extra kick to your beef, toss your leftover steak into a marinade. And there's no hurry to make them once the beef is in the marinade -- leftover steak can marinate for as little as 30 minutes or as long as overnight. Here are a few beef wrap recipes we're sure you'll love.