You do what you can do and who's to say lugging a basket of washing out and spending half an hour pegging out isn't weight lifting and stretching exercises?
I do make myself do a half an hours walking every afternoon. It used to be half an hour of a morning first thing as well but that sapped all my strength for the rest of the day so I haven't been doing that in a while.
I have 14 fish tanks which I water change 1/3 every week. I carry 12L buckets across the room to the drainage drum and lift them up into that. Its been a bit of a killer for me that one and sometimes I don't quite make it up into the drum and slop a bit of water around the floor. I don't dwell on my weakness, just try an make the next bucket empty without making a mess.
I was going to get back into the full house weekly vac of the floors but my backs been a little dodgy of late so still taking things easy. I don't want to mess my recovery up by doing too much at once.