I'm pregnant with #3 atm and have an almost 3 year old and a 1 1/2 year old...the short answer is you do the best that you can!

I have come up with some things that the girlies can do (even if some f the things are messy) that they love and are pretty low key for me:
coloring
tea parties on blankets
pretend vacations (they dress up in beach hats, get buckets, toys and walk to an imaginary beach on our living room floor)
playing with salt dough
singing nursery rhymes (while mama is lying down on the couch, lol)
I pop a big bowl of popcorn and put a blanket down and let them watch a Little Bear 'at the movies'...yes there is vacuuming to do afterwards, lol, but it's a half hour of peace

I bring out a basket of clean clothes and let them 'fold' it
dress up
There's more but preggo brain is taking over, lol
Is essence mama, some days are better than others! The sheer fact that you are worrying about how to be the best mama whilst growing a new LO speaks volumes; as long as you try to do stuff with your babe when you can and are generous with the love, IMHO all will work out
