A few years ago, I discovered the simple combo called "The Eagle." Our school mascot was the Soaring Eagle, so the name was a natural. It combined the simplest of the Loaded Carries, the patterning movement "Farmer Walks," with the basic grinding Squat, the Double Kettlebell Front Squat. I am going to say "simply" here, but the workload is incredible. Simply, we had the athlete do eight Double Kettlebell Front Squats, then drop the kettlebells to his sides and Farmer Walk for twenty meters, then another eight squats and repeat until you complete eight circuits. That goal is often not met. (From Dan John's The Four Steps blog post)
"The Eagle" is an awesome combo. Really. Try it.