sneak away and fill the tub to the very top with loads of water and bubbles and toys. get in with them if you can (swimsuit if you're not bathing with your kids at this point?) if babe is sleeping, do the late afternoon bath, bubbles, candles , music even.
another great idea i heard recently... strip the bathroom down of towels and mats etc. to just fixtures. give each kid a can of shaving cream and go at it. it makes everything sparkle and is of course a total blast!
also, i occasionally (i so desire to be a cool mom like the post you linked... i'm so eager to get more ideas here) will just blindside the boys, tackle them and yell "dog pile!" and we all roll around, run around and whoop it up. that is totally worth the effort to get their energy out and to watch the baby (age 1) pile on like he's a big kid. hysterical! i rationalize it as exercise for me b/c more often than not i end up giving them rocket rides (deep knee bends and then launch them off into pillow piles or the couch) my boys seem to love this physical play. when i get tired, they spend another 10 minutes climbing all over my horizontal resting self.
thanks for this. it's a great winter post and something we all need to do more of with our kiddos!