Copy and Paste Development with Google Web Elements

I half watched and half listened to the  the Day 1 keynote videos of Google I/O today and among the plethora of new and exciting features discussed was Google Web Elements.

Most of us have already used the copy and paste embed code for Google Maps and YouTube, but I think we should start paying more f attention to the other web elements listed currently on the Google web elements site. How can we best utlize them? The Checkout and Wave (now that Wave is public) elements look especially interesting to me.

Do you have projects that could use some Googleizing?