If you have a Raspberry Pi sat in your cupboard gathering dust (or like me have them in every corner of your house doing `fun things`), then when you next need to scratch a geek itch, check out this project.
Its an awesome project which provides your home/office with a Network-wide ad blocking via your own Linux hardware. Its acts as DNS resolver which black lists advertisers domains and has a modern slick web gui.
Fire up your Pi and run the following from terminal;
curl -sSL https://install.pi-hole.net | bash
See more at; https://pi-hole.net/