jings I am so sorry you feel so low - round about now is when I start to hit the St. John's Wort usually, this year it doesn't feel quite so bad, perhaps because I have DS to keep me company for another couple of weeks and he is good company.
My outside lights have lost their top layer too, and DBH has always resented the cost of keeping them alight until when the clocks change. So I bought a long length of outdoor solar powered LED lights and DS and I had great fun getting ourselves tangled up in them just before Xmas, putting them on the top of the weeping cherry in the front garden. They don't match at all, aren't as bright, but as far as I am concerned they can stay on all year. I am going to buy another set when I'm not so broke.
In the meantime indoors, I have taken to lighting a couple of tealights, to replace the tree lights, where I can just see them when I sit here, and I have a big tall candleholder in the fireplace. I light them all at dusk or even earlier, it really helps. IKEA do big bags of them.