Always have this handy
In a place that offers free wifi, let's say a cafe or burger joint, where do people with laptops flock to the most? You'll find that they sit themselves at a table near an electrical socket.
If you're lucky enough to be at such a spot but unlucky enough that you find that both sockets are taken, what do you do? Wait for the other guy to finish charging his laptop? Wait for him to leave?
What if you had an extension cord with more than 1 socket with you? Now you can both share and everyone will be happy.
