Custom icons: Standardizing, displaying static/running, etc (looking for options)

Hi all. I’m looking to standardize my icon sets across the board early in my setup to avoid looking like I have some cobbled-together mess. I’ve been gathering png icons for button cards to start, but I’m struggling to find consistency. Does anyone have any suggestions of where I might look?

I’ve browsed some of the custom configurations people have posted, and I’ve found some icons I like, but there doesn’t seem to be a single resource that offers a consistent style for home automation.

I have this below set for lightbulbs, grow tent lights, etc, which I really like:

As another example, I’d love to find something where I could add a static fan image for “off”, and an animated version when the fan is on, like below:

Again, I’m looking for static and animated icons based on state that are similar to this. Any suggestions are greatly appreciated!