I like to celebrate Winter Solstice. At this darkest time of year, i'm famished for light. So i string Christmas lights on the various evergreens along the driveway. (Mostly hemlocks that have been pruned into shape.) Then i place luminaria--plumbers candles in a bag with sand.
Sometimes meditators actually "see" light as the mind calms. (Others do not.) The inside of the eyelids usually looks darkish. Stray shapes and colors may come and go, but the sense of light can be mildly pleasant. Focus on that pleasantness and simply wait.
In this dark season, that's what i'm doing. Noticing light--Christmas lights or full moonlight. Feeling the pleasantness. And simply waiting.