[hnick]

There are little semi-translucent black stickers you can get called lightdims or something, I use those. Doesn't fully block the light but makes it very faint but still visible which I like. Sometimes you need a couple. Does not help for things like routers which have a glaring sun inside them that reflects off the white plastic and blasts out of every single ventilation hole.

[layer8]

https://www.lightdims.com/

I use them as well.