Introducing UFO-03. Yes, UFO-03. I created UFO-02 a while back, based on the UFO-01 posted here.

I adapted my original UFO design which uses small vending machine bubble capsules, so the system could be interchangeable, so that any top can fit with any bottom through the use of two peg holes which match.

This is UFO-03, a more colorful flying saucer with major parts in blue, with white bubbles underneath. When I had printed the first version (roughly printed at .25mm layer thickness) I thought it needed landing gear, so I adapted the bubble underneath to be landing gear.