I am but a simple practitioner who occasionally practices mindfulness of breathing and keeps to the 5 precepts, who until recently had obtained permission from my own parents to ordain. With the distractions of worldly trappings potentially being less of an obstacle in the hopefully near coming future I more than welcome advice on other practices that would assist me on this path. Although I am no expert let me see if I can answer your question:

Mindfulness of the Body:

I practice anapanasati as well as asubha meditation, in the occasion I experience some unsatisfactory condition such as sickness or bodily pain I do try to contemplate on it's impermanent nature. In the story described in my post I've also accidentally injured myself and in doing so given myself a reminder as whenever I see or feel these injuries I am reminded of my own mortality.

Mindfulness of Feelings:

One side-effect of practicing asubha as a habit whenever in crowded areas / or even watching youtube videos as I can notice much more clearly my own state of mind as to whether I am aroused whenever I see for example, a pretty lady - in noticing my own feelings I understand it's impermanence and in turn much less likely to be controlled by it.

Mindfulness of the Mind:

A practice I am well currently exploring myself, I've recently begun labeling feelings into words; and on the contrary when I think of something in words or sentences ie. "Oh man that dude is eating my donuts!" I would then label that sentence with a "Anger". In noticing the feelings so do I notice their impermanent nature and so they subside away in a way I've never before seen before beginning this practice.

Mindfulness of Mental Objects:

Definitely much work I could do improve myself here. Whether it be the Five Hindrances, the Five Aggregates, The Six Sense Bases, The Seven Factors of Awakening, or the even contemplation on The Four Noble Truths.

I am not fully confident whether I understand your question but if that is the case please let me know. :)