Two ideas I used to love as a child, but haven't about that much until now;
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We are dreaming, and soon we will wake up. And the most real-seeming things will vanish and dissolve.

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God exists. Or many Gods.
And we live in one tiny insignificant corner of some tiny insignificant part of their world. A breeze blows through their window, and our universe implodes. We have no time to think but if we could, we would be shocked at the scale of the catastrophe.
At other times, maybe a dust particle in their room shifts positition and a falling comet changes course and a tiny green planet breathes a sigh of relief, shocked at the scale of the blessing they've been granted.
The Gods, in the meanwhile, continue living their own lives. They don't know about us, and if they did they would be unimpressed. They do things on a bigger scale up there.
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Both not so original, I know. But both would make me smile.