Just playing devils advocate here: (Please don't take this personally)
-setup ipv6 irc server
-run irc bot with ipv6 at host on ipv6 server
I'm sure there are some ISP's that frown on this and won't let you do it.
-ipv6 less latency, make it <100ms
Dependent on your ISP and how far you are from your tunnel endpoint. My tunnel is in Chicago and I'm sitting in Ohio...my ping times are running around 100ms currently, and that's probably as good as I can get them.
-audio streaming via ipv6.
Probably violates the TOS you have with your ISP (some, not all)
-make 5, 10 or 20 sites ipv6 ready, not just one
What's the point? If you can do one site, you should be able to do 1,000. Granted, it'll take more time to complete, but really, you're just doing the same thing over and over again. At that point, I'm sure you could write a script to do it for you.
-suggest to friend certification or ipv6 use.
This one I like. It gets the word out about IPv6 and helps educate more people; I'm all for it.