Elon Musk took to Twitter Sunday night to announce a new recovery method for an upper stage SpaceX rocket. A balloon — a “giant party balloon” to quote him directly — will ferry part of a rocket to a bounce house. Seriously.

If anyone else proposed this idea they would be ignored, but Elon Musk lately has a way of turning crazy ideas into reality.

It was just in 2012 that SpaceX launched and landed its first rocket and now the company is doing it with rockets significantly larger. And then early this year SpaceX made a surprise announcement that it would attempt to use a high-speed boat and large net to catch part of rocket. And it worked after a failed first attempt.

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