http://www.techradar.com/news/steam-gift-cards-arrive-just-in-time-for-the-halloween-sale

Just in time for the Steam Halloween Sale, Valve has introduced digital gift cards, allowing you to give the gift of PC gaming without leaving your home. 

There have been physical gift cards available for a while, but this would mean that you’d have to take your actual physical body to an actual physical store in order to provide your loved one with some Steam Store action.