Most of the energy is used in making them. Rechargeable batteries for small appliances are very much more environmentally sound. One energy-saving bulb lasts as long as eight ordinary bulbs and costs less than half the price of eight such bulbs. If not, trains are better than motor vehicles, and public transport is much better than private. The very worst thing you can do is fly - the energy costs are truly astronomical.
Shorter hops are even more wasteful.
This is one area in which your local actions can have global impacts. Your local authorities could follow the Californian example and legislate for zero-emission vehicles. Or public buildings could be run on solar heating or constructed using passive solar architecture. Getting your local political representatives on side can make a big difference. The German city of Freiburg, for example, is on the way to becoming a model 'green city', thanks to progressive city planners.