Yeah, its really weird to see how their eyes blink in slow motion. I thought they would be more like other birds, from the top and bottom eyelids merging together. Um, Nope.
Yes, there are items, physical items in fact, that are lighter than air. Would be really good to use as a light sail, except for the fact it would get torn by space dust.
Do you remember that scene where John Candy kills all The Walking Dead (zombies)? Yeah me neither. But if he had, and had made a cameo, this might have been what it looked like.