This was my life, probably yours too, when I stayed home with the kids. You'll still catch me running around in my favorite Lululemon leggings and Hot Chocolate 15K jacket, even when no sweat was involved.
There's never a bad time for active wear. Between you and me, I've worn mine to concerts, PTO meetings, parties, date night at the movies. 9 times out of ten, I never got that workout in, so why not? Just throw on a cute little jacket or a pair of boots with a long shirt...BOOM! ROCK THAT ACTIVE WEAR!! (Workout not required) Be more like these Moms and OWN IT.