In order to use the Tinkerplay connectors, you'll first want to sketch out a basic creature using the app. You'll then download the printable files, and edit those in Meshmixer.
Make a simple Tinkerplay robot using the parts that you think you'll want to use. In this case, I've sketched out a torso, legs and arms. I'll be getting the head and tail from a 3D model.
Tinkerplay has two ways to get files out of the app:
To use the first option, press the export icon in the lower left corner of the Tinkerplay app. Adjust the size of your model using the controls provided. (I prefer using 100%) Press the green button. It will now show you an IP address, a set of 4 numbers separated by periods. Try entering this into a browser on a computer that is connected to the same network as the local device, and you should see a page that lets you download either .zip or .thing files. Pick either one, and download it to a known location on your computer.
For the second option, you will need a Makerbot account. Press the export icon in Tinkerplay, then press the gear icon on the far right. Choose Makerbot Cloud as your export option, and enter your Makerbot username and password. Confirm your selection. Now when you press the green button, it will give you a progress report as it builds your files and uploads them to Thingiverse. You can now visit your Thingiverse account on your computer, and download the .thing files.