I don't get a lot of "me" time when my OH is working days since he is gone from 6:15 am until 8 pm. By the time my LO is in bed on those days I'm pretty exhausted so I don't tend to do much in the evenings unless my LO had an especially good nights sleep the night before, in which case I will usually use our home gym or run on the treadmill. Me and OH usually have a glass of wine in the hot tub after LO has gone to sleep at night, after which I go to bed. When my OH works nights or when he is on his days off then I can have "me" time every day if I want it (which I usually do!). I usually do something active, trail running, biking, swimming, yoga, etc. Basically anything that I can't do when LO is with me. I am a better mom if I get a bit of a break and don't have to be a mom all day every day, and my OH enjoys spending alone time with our LO. I am breastfeeding and my LO won't take a bottle so I can only have about 2 hrs of "me" time before I need to make sure I am home to feed LO. Even when I have to look after LO I try to do something I like every day and bring her along with me, so I will go for a run with her in the jogging stroller, go for a hike with her in the backpack, etc. If I need to do shopping or chores or something I do those on days when I have LO because she can just come with me, and I don't want to "waste" my me time on things I could do with my LO.
My OH works 5 days on/5 days off so he gets quite a bit of time off work. He spends most of his free time renovating our house (which he has been doing by himself for almost 2 years, it's almost done!) so I tend to have my LO even when my OH is off work and at home unless I ask him to take her for a bit (which he always will). He also plays hockey a couple of times a week, after which they go out for drinks so it is a full evening of socializing for him 2-3 times a week.