As a FREE* VPN:
Get a good weatherproof enclosure for your PI, a solar panel, and a power bank. Configure it to automatically connect to any open WiFi networks (via bash script and cron) and then use said connection remotely as your own free VPN. Be sure to put the PI in a good remote area where it won't be messed with, I'd suggest somewhere up high if possible, also if you're using it for not so legal purposes I'd suggest doing it somewhere far away from your main base of operations.
* FREE after initial hardware investments.