Depends on the shift. An 8 hour day shift where I get home at 5:00pm I'll make supper, maybe stop at the store first to buy anything I may need. I may even run some erands like if I need something at Home Depot or something of sorts. Typically I don't feel like doing much after a day shift so I'll pretty much eat and then relax. Maybe watch TV, game, or go on the computer. Don't really have a routine.
12 hour shift, where I get home at 7pm, typically I'll just go on the computer for a few hours then try to go to bed at 10pm but I'm usually wide awake as I'm more nocturnal, but I try to sleep given I have to get up at like 6am the next morning.
12 hour night shift, get home at 7am, so I usually try to go to bed by 8pm and get up whenever. Nice thing with night shift is not needing an alarm so I sleep more naturally. Typically wake up around 2-4pm then just kill some time at home on the computer, TV or what not and leave the house for around 6:30 to be at work by 6:45.
Awesome thing about my job is there's not really a dress code so I usually just wear jeans and tshirt and stay in that at home. In summer we can even wear shorts at work. (nothing would stop us from doing it in winter except for frost bite.

) Sometimes I actually do wear shorts at home in winter if I don't plan on going out though, much more comfortable than jeans.