Thinking about where whatever it is we are goes when we pass on.
I like to think of everything as a big shapeless unconfined area of water. All things are like ice cubes while they are being and perceived. Gradually, they change and melt away. Only they never actually go away, they just become part of the water again.
Something is there and perceptively different from what's around it. It's gradually changing, morphing and melting over time until it eventually rejoins that which it never left.