I have $50 per pay period feeding the account I use to buy ETFs. Dividends also pay into that account. I can basically mindlessly buy whatever I want knowing that as long as I use that account as a limiting factor, I won't overspend.

I limited my savings account to grow at a paltry $5 per pay period, plus interest (also paltry).

I actually increased the amount going into my checking account. My thinking is that I should not be dipping into my savings account except for planned purchases.