Quick SSH Proxy
If you have access to ssh to a server, its very simple to use the connection as a proxy server. To do so go to the terminal and run the following command :
ssh -C2qTnN -D 8081 youruser@yourhost.com
The number after -D (8081) specifies which port to listen on. Change it to something else of your liking if something else is using this port.
Then use localhost with the port number you specified as the SOCKS proxy, like so :

You can use ipchicken.com to check that everything is set up correctly.