It seems that the symbols that appear in the meditations I've done seem to show up in some way or another in my life soon afterwards, like in the next day or two. Usually just kind of mundane experiences, so far, but sometimes they prove to be a warning. Like, one symbol that arose was a red gear. I asked to know more about the symbol and a bicycle rider appeared, with the gear as part of the bicycle. I didn't really understand it, but then today as I was driving down a main street (5 lanes) a bicycle rider shot out near me into the lane next to me then across my path and on across the other lanes to the other side of the street. It startled me and I hit my brakes to avoid hitting him. I now see that the red gear was a warning about the perilous path of this bicycle rider.
And like the box with the rays of light from the meditation, the next day I was at a Tesoro gas station with my daughter getting gas in her van when I noticed the logo was a box with rays. That's a pretty accurate, albeit, mundane (and kind of disappointing) realization of the symbol.
Another symbol that I have gotten is a little red fire hydrant. Another warning, perhaps? I've been very careful with the stove since i got that one! (Occasionally I forget to turn off a burner or the oven until after dinner. I always notice it when I take the dishes in to the sink, but I've been especially careful to turn everything off when I finish cooking, now.)
I'm going to keep working at these symbols, though, and be open to a greater understanding of them and to gaining deeper insight into my life purpose, etc.