I've had some very lucid dreams, and met some interesting characters. At one time I recall seeing someone wearing a floppy, broad, brown hat standing alongside a wire fence, as if I were out on some country property, and that stuck in my head a bit And I used to see power-lines (like suspended electricity cables) all the time, and would have many drifting dreams, moving along those lines. One time, in an afternoon cat-nap, I woke up in some brilliantly luminous, cloudy space, with two very bright lights coming towards me, but I didn't stay there for long.
One night, in a dream, I recall hearing one of my old meditation teachers saying, 'You've got a visitor!', when I saw two figures, who looked like elongated spheres dotted all over with glowing blue, red, green, and diamond-coloured spheres, coming towards me.
I've heard other people talking about a labyrinth, and in fact I saw this myself one night. It looked like a printed-circuit board, with remnants of a castle in the centre.
All of this was quite vivid, but I am certainly not awake when I go to sleep.