Comment by digging

> I'm also tempted to copycat some of those YouTube microbiologists who collect water samples from random places and throw them under a microscope to look at diatoms, among other things. I could possibly convince my retired pathologist mom to gift me her microscope and repurpose it for exploring the microcosmos :)

I'm a fan of them and have tried my hand at this a few times with a microscope I eagerly bought. I'll just say, it's harder than it looks. Not simply the observation, but the collection and preparation of specimens - it was pretty rare for me to find something more interesting than fast little living bubbles. But I did see one copepod with a bright red eye, and several very cool varieties of rotifers, and some fascinating nematodes. If you're more dedicated than I am, you could have a really good time finding and filming them.