You can even rent them for almost nothing. Or if you would prefer something a little better, set-up a little craft area. You will get a little peace, and they will have something to be proud of. Holiday grocery shopping can be a killer if you work. See if you can take off early one day.
Grocery stores are almost empty during week-days.
Then enjoy the time you would normally have to be in the store, doing something you never have time for. Ohhhhh the wonderful food, so many great dishes, so many calories. Don't deprive your self, sit back and enjoy every little morsel you place in your mouth. Eat enough to satisfy those taste buds, then stop. Then watch what you eat during normal times.