After you've got some bitcoins in your wallet you can use a special bitcoin laundry service, which completely destroys connection between you and your coins.
Thinkpad T42. I bought it in 2009, but it was used, so the real birthday is 2007, I guess. In 2012 I've replaced Lithium battery because old one was completely dead.
Sinse then I am continiously looking for a new Lenovo with "normal" 7-rows keyboard layout, but cannot find any. The last one was Lenovo x220, which is also relatively old. After that Lenovo completely fucked up "Ins-Del - Home-End - PgUp-PgDn" block and even removed some keys at all.
For me decentralized internet is: Netsukuku, Hyperboria, cjdns, Serval Mesh and such kind of projects, or at least darknet's "something-over-ip" approach, like Tor/i2p/Freenet...
But not just "Install dovecot/wu-ftpd on home computer and feel like you fight the system" - this is naive.