when sunbathing i like to play with opening my eyelids ever so slightly so the colours i can see through my eyelids subtly change.  
if i open my eyes wow! there's the world in detail; the sky, the sun, the birds, or maybe someone has just brought me a fancy coloured cocktail!
that time alone behind my own eyelids is wonderful to me neither quite in the world yet not separate, free to be just me, to feel the deep relaxation of not having to do anything, no thoughts, no pressure just a deep feeling of joy and gratitude to be alive and well and able to play with the light on my eyelids