Hold your own Olympics. Here are a couple of ideas:
1. My son made this ski ramp on his own. You go around the big cushions and pillows in a skiing position (kind of like an obstacle course). There was a finish line at the end. Everyone got medals, and we stood on the awards stand singing a song. It was really fun! You could make your own obstacle course to tackle through like this one.
2. Any classic relay races (with the focus being fun not competition). Balance the egg on a spoon. Put a balloon between your legs and cross the room. Walk backwards or do the crab walk.
3. Ring toss. Jump rope. Bean bag toss.
5. Any other ideas?