I see a lot of videos of people doing Turkish Get Up's with one-hundred-pound kettlebells or barbells, but I've found it to be most effective when you slow it down and do it correctly with nothing but a shoe.
Grey Cook wrote in an article named, The Great Equalizers, "The TGU challenges three levels of competency or capacity, and it will usually expose them in the order they need to be corrected. Let’s consider these three points as equal contributions of a complete physical perspective or the three equal slices that make up the complete circle.
Minimal movement competency—fundamental mobility and stability
Minimal physical capacity—strength, endurance, coordination
Technical competency—education and execution of a movement skill
In the video in this link , you'll see this woman doing a TGU with a shoe on her fist displaying movement competency, physical capacity, and technical competency.
If you're interested in just how well your body is functioning, grab a shoe, drop down to the floor and do a TGU with a shoe on your fist. Do 2-3 repetitions each side. Go slowly, through each step. Notice the differences your body moves on one side compared to the other. If you can't keep the shoe balanced on your fist, notice at what part of the movement it falls to the ground.
Let me know how it goes.