There was version 1.0 that we used for our bike:
Then we made version 2.0 for some friends in Seattle:
Here's another great shade cover by @conanlow:
(photo used with permission)
Meanwhile, Madsen Cycles is finally testing what appears to be a more finalized prototype of their bucket cover.
Is your bucket covered? We'll continue to add a few more pics and links here. Leave a link in the comments or email matt (dot) newport (at) gmail.