I just made this because it's really annoying to assemble after printing, so I just put the thing together in tinkercad. enjoy!
it still has the inner gaps where the connectors would go so it theoretically could float in water, the same goes for my assembled Lucy model remix from Syfy's Lucy from killjoys. if I am right, you could use water in a big clear tub and it would look like they are flying in space, would be interesting.