I agree with all the PP that mentioned movies, takeout & help! We're pretty much a no-tv family, but when mama gets sick I will snuggle my boys on the couch for movie...
Here's my survival plan for exhausted/sick mama -
DP takes the boys out before work (even if that means that they are at the playground @ 6:00 in the morning). I try to get help with rides to school or just an hour outing during the day, as well.
We do take out, eat sandwichs for dinner, cereal for lunch.
We read lots of books & I spend as much time as possible parenting from a verticle position. I set up legos & books on tape for DS1. I let DS2 empty all the dresser drawers, wash rocks in a basin, take the books of the shelves while I watch from the couch.
We have tea parties, make juice popsicles, eat lots of chewable vitamin c.
Finally, we take lots of long warm baths with essential oils. Both my boys love the tub & will play contentendly until we run out of hot water. When I got the dreaded H1N1 last spring, we took 3 baths a day!
If I feel well enough, we walk to a very close green space (hot tea in hand), so we can all breath some fresh air.
I call these days the survival days. I don't try to be a good parent, I just try to make sure that the kids are fed, the babies diaper is changed & that they don't hurt each other. It's OK if the house is a mess, if not single vegetable has been eaten, if we stay inside all day. We just try to survive the day & hope to feel better tomorrow.