Do you have a dark, dark cupboard in your kitchen? Maybe one that gets more cluttered than it should just because you can't see into it? You need a cupboard light.
I have one of those long, rather inaccessible cupboards in a corner of my kitchen, with a narrow door and shelves running all the way to the wall behind the dishwasher. It's almost impossible to see all the way to the back, and it had become a repository for way too much unused clutter and gear.
But I needed that space; my kitchen isn't so big that I can just waste a cupboard. So during the Cure I cleaned it out, sent things to Goodwill, and then reorganized it with holiday and special occasion platters in the back, and all my flower vases on the upper shelf.
But that didn't solve the problem of the light, so I went to the hardware store and for $3 bought a battery-operated light for the wall of the cupboard. Tada! Light, bright, and easy to see now. I feel like I conquered an annoying problem.
So this is highly recommended, if you have one of those long, narrow, inaccessible cupboards. Reclaim it with a light!
Here is the light I bought, along with a better suggestion. I could only find a very cheap $3 light that takes 4 (!!) AA batteries at a time. If I had done a little more research first, I would have gone with a longer-lasting LED light.
• Multi Purpose Light, $2.50 at Amazon.com
• LED Tap Light, $9.95 at Solutions
Related: Survey: Do You Have Under Cabinet Lighting?
(Images: Faith Durand; Amazon.com; Solutions)
Floral Drink Dispen...

I also love putting these type of lights underneath shelving units to cast a soft glow on objets d'art or books, even. It's especially nice to watch movies at home with just the muted light from the shelves on.
Katy
http://fengshuibyfishgirl.com
I can see myself forgetting to turn it off and killing the batteries. It would be great if they had timer to turn itself off automatically and even better if that timer was programmable.
Better yet, some kind of switch like you find in the fridge. I remember our old caravan having one of these when I was a kid.
It shouldn't even be that hard to put together yourselves, all you need is a little push-button wired to a led light.