These are mine, obvs not suggesting you'll be feeling them all but just for ideas:
Regular mani and pedi (or just a pedi as I tend to neglect my feet and just do my hands if I am pushed for time). PP's shellac idea is good!
Regular wax - I've slowly worked my way up to a Hollywood but just a bikini and leg is good in summer at least. Just makes me feel like even if I'm having a scruffy day that there's part of me that's "done" that only I (and OH) know about.
Take make up off always, even on days where I don't wear any ill cleanse with a favourite cleanser.
I do a facial massage one or two nights a week when the toddler is in bed. 15-20 mins in front of the telly or reading my kindle. Search for Lisa Eldridge Facial Massage on YouTube.
Two sessions a week to exercise - swimming and Pilates. The exercise is great but just being on my own is bliss. I almost skip up the road when the front door closes behind me! Added benefit of endorphins and helping with weight and general health.
Baths - at least once or twice a week - but then I prefer baths to showers. Maybe a long, hot shower if that's your thing. Get some nice stuff to use just for that bath/shower. Like a nice sponge or candle or shower gel.
Very interested to see other suggestions!