Zero configuration VPN using friend's or coworker's computer. Available for all major operating systems. You can connect to internet through small client executable running on remote computer (or smartphone) to access network resources available only to remote side. No special adapters required od remote side. Whatever is available to remote computer, it is available to you too.
Wirelends will run on many devices and many operating systems. It will work on your desktop, of course, but also on your smartphone. You can get access to remote resources with a single click.
What's even better that remote side needs to install only small piece of software, ~300 KB of size, in order to accept your connections. And that can be console-type service, full blown desktop, server in a data center, his mobile device, small equipment such as Raspberry Pi.. Wirelends runs almost everywhere.