A browser extension that clicks on every blocked ad to fight advertising surveillance.
It garbles advertisers' data as a result, but you must disable uBlock Origin to run it; they can't work simultaneously. I recently moved to it and, so far, am never looking back!
You can fake your IP. There isnt really any authentication at the IP level. Just make a packet and overwite the IP field.
Edit: I was corrected. The TCP handshake requires you to have a valid IP you can respond from. So even though you can fake your IP, you can't use that to talk to most websites.