After becoming enthused with Astrophotography, I then discovered macro photography. I know, opposite ends of the scale.
I was suprised and very pleased to find that basic macro photography can also be a cheap endeavour. Often only needed a few tubes and rings that can be bought for under £10. Of course once you start down this road you find you'll want better magnification, lights, racks and software.
The covid lockdown summer of 2020 was spent chasing bees around the garden, trying to see into the depths of flowers and stacking images of jewelery.