Cad-aided illustration of a possible final project
After fooling around with some software out of the proposed list, I made an illustration, using Illustrator. What you already know is better and faster (obviously)! Experimenting with other software was nice though, and might come handy in the future.
Cad-aided 3d model of a possible final project
A wristband is just two cylinders (one cutting the other), and some fillets. Lights, material, and here you go! For the 3d model I used Fusion 360