I've been playing it all evening.

I've made a rocket, and a fireworks... thing. It's so much fun!
We can also share our creations here if anybody downloads. Once you've saved your creation go to the '
Phun' folder in program files and open '
Scenes'. Then select the file with the name you saved it as and upload it
HERE. (File extension not allowed in attachments.) Make sure you save your file with an ambiguous name so that we don't get any file clashes. So instead of calling it "car" call it "fbcar", for example. Oh, and don't use capitals.
To install somebodies file, open the 'Scenes' folder again and paste the file inside. Then you can load it with the program.
Here's a little fireworks display I knocked up. It's not great but it's the first half-decent thing I've made.
It should load paused. Just zoom out and press play.
[Click here to Download]