I'd be extremely careful with attaching monetary values to every behavior you want to encourage, since that can squash intrinsic motivation through the overjust

I'd be extremely careful with attaching monetary values to every behavior you want to encourage, since that can squash intrinsic motivation through the overjustification effect. You should brush your teeth because it's a healthy and comforting part of your routine, not because you've decided $0.50 for 3 minutes of work is worth it.