I wanted to say "shake them" but I think you need better than dark jokes right now... Shake them XD I couldn't help myself. No but if you run them around like dogs they will wear out and take a nap. If you give them physical challenges to win things like toys and stuff they will work hard.
Coloring, workbook activities, play doh, legos, dress up clothes( old adult clothing and shoes are great w jewelry), puzzles, computer learning games, sit in a chair and have them sit on the ground and READ to them they love it ! Make sure they go outside to play or take a short walk at least ten minutes a day even in cold weather.... Mostly for you.... Go in another room for a few minutes and BREATH, several in and out breathes and remind yourself how blessed you are to have them, but mostly... Just Love them. Someday very soon they will be grown......;)