Aerogel

Let's build the bikini bottom out of this, so we can push it somewhere else with Patrick!

Aerogel. Im buying some of this

A piece that size could also hold a car without being crushed!

The picture actually shows a carbon based aerogel, not a silica-based one.

well how cool is that

Or maybe it's just hollow Styrofoam. Don't believe everything the internet tells you.