For me the things I have reserved as efforts that I can bring out if other approached don't work or if I just don't have the energy for those things are rewards and punishments.
I am so comforted by the fact that we haven't over used the whole reward thing because there have been times in my life as a parent that I have ever so appreciated being able to rely on that method of getting something done.
We also have done a few punishments and I have kept a few (like grounding) on reserve in case I feel they will work at some point when other things fail.
Playful parenting...is SO not my thing. But, when I NEED to get something done, I will fall back on that too. It's nice that I don't do it often because it works like 90% of the time with my toddler because it's such a treat.
I also don't love the whole "choices" game for toddlers. But, yes, it works and we use it from time to time.
My older DC attends public school. She doesn't have any behavior issues but I have often thought that I would employ teacher's help if she ever got to a situation where she was missing work or whatever. On some level, I think my DC knows that I am letting go of some of the parent involvement in student responsibility and am fine with the consequence of her getting into trouble with her teacher. Because of that (in part) I think she is really conscientious of her teachers.
I feel like there are so many good airplane analogies for parenting (like the one about the oxygen masks). The GD toolbox analogy for me is about the seat-back. I never put my seat-back down because it gives me so much psychological comfort knowing that I could get more comfortable if I wanted to. Having these things stored away in case of a GD emergency also gives me a lot of psychological comfort. And, keeping them stored mentally helps in the other way of helping me not fall back on them too often.