(SAMPLE POST, STILL IN DRAFT MODE)
Another example and great tool within our daily routine is the stair.
At the very least, we already get free one-legged "squats" out of it.
But we can easily add some variation, ideally based on observations we make about ourselves.
In my case, I found that my left leg was wobbly when taking double steps without handrail support.
In other words, the handrail served as a crutch. And maybe was the root for the weakness?
After taking the ~100 steps / day with left-leg double or triple steps only, for a about week, that almost went away completely.
As a result, I should already enjoy cross-benefits when using that leg / putting weight on it. For example when cycling up a hill or sliding into a leftie forehand on clay.
For years I thought my left foot was the main culprit for this weakness, and strengthening there would build up the leg again. Though I do notice that the now slightly stronger leg also seems to have downwards benefits towards an overall more stable stance.
Due e.g. to the foot and other previous injuries my whole left leg is still noticeably thinner (i.e. less muscular), so will keep looking for ways to keep evening that out.
Maybe I'll take twice as many steps, take some weights along, or add in some single-legged squats where possible...
Other ways to utilize the daily stairs could be walking them backwards, sideways, crossover etc. Or adding in a calf raise and/or a stretches.
As always, looking for the weaker side and prioritizing practice accordingly.