Galactops are air-powered spinning tops that will spin continuously for as long as you can keep control!
Sculptor was specifically designed to print well on FDM printers without requiring support material. For best results print at .1 mm layer height, but .2 mm should work as well. A heavier top should spin longer, so 100% infill may be the best option.
Download also includes straws that help control your airflow from above. You can also use any old straw... just don't let yourself get too lightheaded!