Usually when I leave town there are certain lights that I’ll leave on in the house. The bad part about that is that it means I’m using energy all day long when the lights really don’t need to be on. Instead of going that route you could have a light switch that’s programmed to come on at a paticular time and then shuts off at the time of your choosing. It’ll help give the appearance that you’re home. You could also set the light up in your bedroom if you wake up while the sun is still down to help you drag yourself out of bed.
This easily mounts to your light switch by screwing into the bottom hole of the light switch. It has an LCD control panel, which is how you control the exact time the light will flip on or off. It can flip the lights on or off up to 9 times a day. To keep it running it needs two AA batteries. To pick one up it’ll cost you $39.95 through Hammacher Schlemmer.