I like James Clear's idea of "habit stacking" from his book Atomic Habits. For example, every time you brush your teeth - clean the bathroom/sink real quick. Then, you're ensuring every time you brush your teeth (which should be at least once a day), you're getting the bathroom clean as well.
For daily habits, do it everyday. Not just workdays. If you don't do it two days a week, it's not a daily habit.