They participated in parades often. And the older girls would put on rhythmic gymnastic shows. But in general they didn't do too much entertaining. The boys were kept busy with sports and training, and the girls did things like learnt to sew, made things for the front, collected money for the winter relief, etc... in addition to some lighter sports.
I think your saxophone idea sounds cool.
Here's another *maybe I'm being thick* question. What's the problem with political reenactment? Is pretending to be political any worse than pretending to shoot people? I've noticed that all the groups avoid everything political, and it just seems so odd to me, as it was such a politically charged time. I find the mental aspect hugely interesting, and it often seems like that's just glossed over. I mean, not everyone agreed with the politics for example, I'm interested in the internal struggle those people felt. That sort of thing.