My pick for best gift of ’08, Boris writes –

My sister suffers from seasonal affective disorder, also known as winter depression. A commonly prescribed therapy is light therapy – about thirty minutes of bright light in the morning. Bright in this context means more than 10 000 Lumens. You can of course buy commercial light-boxes, but I wanted to construct one by myself…

What a good brother, truly heartwarming. He even cared enough to share his build process ;)