Did you know you can earn 0.44% APY on your BAT earnings on Binance? It is not much, but it is better than nothing. All you have to do is send your BAT rewards to Binance and then place it on Flexible Savings. You can cancel the savings when you want to sell/convert your BAT tokens, so there isn't any reason not to do this.

I have set up Brave browser on three computers (my personal computer, my work computer and my parent's computer), and I'm earning about, on average, 10BAT in total per month. 

Granted, the earnings are very low - with the APY return, I would be making about 120.24 BAT tokens a year. Without it, I would make 120 BAT a year. So the Binance rewards are giving an additional 0.24BAT a year only.