My twisted knee has really been annoying and delayed me doing any serious yardwork (never mind just putting on socks and shoes), but I discovered something beneficial almost immediately.
I have 4 litter boxes for the cats in the basement. I have always been uncomfortable cleaning them kneeling on the cement floor. Well, (spurred by the difficulty of kneeling) it occurred to me that my workbench is right next to the litterboxes. So, I thought "why kneel down there when I can lift the litterboxes up to the workbench"?
Oh wow, that is SO much easier! Scraping everything loose and scooping it out is easier, it makes it easy to sweep loose litter from around where the boxes sit, and I am more inclined to clean them more often!
And even if you don't have a workbench right there, nothing says you can't put a cheap skinny-leg hall table over it for the same purpose. Out of any problem, some good thing may result...