Quick Ball, with magnetic clasp

You are going to need to print the blue_1 part with supports. The yellow_top and yellow_bottom piece might also need supports depending on your printer.

Glue the yellow and blue lid and bottom pieces together (you will need 2x blue_1, 2x blue_2, 1x yellow_top, 1x yellow_bottom)

After assembling the lid and the bottom you can glue the button and the ring to the bottom with the hinge in place as you glue the ring down. Then snap the hinge into the lid.

You will also need 2 magnets (1/4" X