Master Ball Pokeball model. I was inspired by a model that I cannot find anymore, but I loved the basic pokeball print I made years ago and decided to make a similar model. This is the size and design that I believe looks and feels the best in your hand. I recommend giving it some infill weight if you'll ever be holding it or handing it to other people. 

This model is easy to print, requires zero supports and can be done without AMS. I recommend adaptive layer height for smoothness. You can print the bottom half of the model twice in order to make a normal pokeball model instead. Glue is required to hold the model halves together. 

I hope people make many variations of this to match the various pokeballs from the games! Enjoy!