Can you play hide-n-seek with her? That was my dogs' favorite game while we were housebound. They had to sit and stay in an area, then I'd sneak off and hide. Even if they knew where I was 'hiding', they loved the game of 'finding' me.

I usually hid behind something - a doorway, partially up the stairs. When they found me, I'd make a big deal of it. This is really good for recall.