Here's an example:
You wake up, get dressed, go outside. It's cold.
Your head is down - hood braced against the wind. You watch where your feet step to make sure you don't slip. You vaguely see something - a little bird? Wait! There's two of them. They are talking to each other. You can see it in their eyes.
Even if you ignore them now, it's too late, these little creatures popped out of nowhere and they spoke to you.
What a random gift. That magic has changed your morning and your mood.
Oh, and remember, it really is a gift because the sun will come out and they will melt, get stepped on, blown away, scratched at, maybe even peed on. They will be gone sooner than you think so it's important that when you find pareidolia, take note of it. It is probably only you who will experience them at all.