what helps me is plan an outing, park, library, bookstore, movies, playdates, beach whatever. get them playing for a few hours, have lunch packed and brought with us, fresh air does us good, then we come home and we're ready to take it easy. i then ask kids to each get a book and read in quiet, while i do housework, or i put a movie on, make popcorn and let them veg out for a while.
then we have art hour (more like two hours). i give them topics, for example draw a story of princess who....and they do.
the days i stay indoors and don't take them out i am moody, exhausted even if i didn't do anything really, and just plain bored.
when we go out we all get energized.
try to venture out.