Many of those gizmos which are "always on", by themselves, use very little electricity. But when every single electrical thing in the house is always on, that can add up!
Like if you buy a soda pop for $1 every day. That is just a dollar. Add it up and that is $365.00 a year!
I went around the house adding switches or "switchable to off" power strips to everything which was always on. Just about everything was always on! Even some air cleaner fans and the kitchen blender. Anyway turning all that stuff off when not in use saves me about $15 a month (or $180.00 a year) on the electric bill.
Following is a paper which lists the power usage of many of these items...
Leaking Electricity: Individual Field Measurement of Consumer Electronics
Lawrence Berkeley National Laboratory...