FreeNet6 will give you a /48 block of real world IPv6 addresses, using TSP (the Tunnel Setup Protocol.)

See and get your addresses by signing up at

Freenet6 is better than 6to4 because
The IP addresses are static.
6to4 is better than Freenet6 because
The pings are much lower - you dont have to go through a tunnel to New York to get to anywhere on the IPv6 network.