The power is OUT! Flashlights dim? Candles too dangerous with kids/pets? No batteries left in the store? Try the little individual solar lights designed for outdoors. I bought some at a discount store for cheap. I keep a few on my sunny fencepost...they stay clean and within easy reach to bring inside for great indoor lighting in an emergency or any day to save electricity and use the sun's free energy.
Vitamin D deficiency is serious business. I've been paying closer attention to this problem since my Mom had a serious problem with it last winter. She was holed up in the basement during our long power outtage. We had a bad winter last year, gray, snowy, icy. She had to get shots & take tons of D. Go out in the sun and you might need a Vit. D supplement too to stay healthy this winter!