Thanks, this seems exactly what I was looking for! One question though, all demos I looked at had 'run' disabled. Is there some 'catch' to this?
If you want to alter/play around with the demo, you can "clone" the sample library, which will prompt you to create an account if you have not. This process is free/noncommittal/just requires an email address, but lets us create an env + storage for you to run and persist it in. Post-cloning, you can run any library you own like you would expect.