Most of my purchases for less than $10 are for fast food / cheap restaurants. Since Citi Forward offers 5% at restaurants, it is my go-to card for most cheap purchases (Except I still get the Freedom 10 pt. bonus, so I still use it more for the time being).

Otherwise, I use the Club Carlson card for non-bonus category purchases. 5 CC points is > 1 SPG is > 1 UR for me.