First option - IP software or Special devices There are lots of programs out there that offer the possibility to use their IP address, or add a certain device to your computer. You can click on each one to go to their website and read more about them or download the trial versions:
Second option - you can use an anonymous proxy server There are many sites that offer proxies for free, some work and some don't. Usually surfing through a proxy is a bit slower (or a lot...) but it gives you the anonymity.
You can search for "free proxy" or "anonymous proxy" on any search engine.