I think you've got some good ideas - keep it simple. I would suggest balloons - blow them up and let them play!! They probably wouldn't nomrlaly have them so it will be a novelty and it means you don'[t have to put too many toys out (you do't want them wrecked). Games like Duck Duck Goose - catching and running are good but maybe hard if you're not outside. Dancing is a great idea too. have fun!