Every single game I buy 5 Potions, 10 Super Potions, and 15 Hyper Potions. Also, I get 5 of every status healer and other misc. items (i.e. escape rope, repels, etc.)
That's not even the bad part though.
I'm so used to these numbers that I'm too OCD to even USE them. I would rather be stuck in the League for hours and hours on end than ever use one of my Super Potions and make it's quantity go down to 9. Knowing I'd only have 9 in my bad would make me too nervous and have to restart the game and try again.
No idea why I do this, or buy them at all if I literally never use them. But I've been doing this for as long as I can remember.