Movie in the Park:
Charge up that portable dvd player or laptop and take it to the park with a picnic blanket. Invite some of your toddler friends and parents for a movie at the park. Ask each toddler to bring their blankets and maybe an evening snack. Once everyone is at the park, have the kids all sit/lie down on the blanket and watch the short movie.
You might even borrow an exercise video from the library and have some fun following the directions. Maybe even try some yoga!