Like you I lost some reindeer and had an inflatable damaged.
Outcome, my son and daughter (both high school students at the time) did find out who had taken and damaged the inflatable.
When the display was over for the winter these two high school students who had caused the problem came over and helped my son, daughter and myself put the display away.
I thanked them for helping and asked why they volunteered and they looked at my kids and said they my son and daughter thought it would be good for them. They then asked if my kids had said anything to me. I was thinking there is more to this. Later I asked my son and daughter how they got them to help. They told me they were the boys who had damaged my display.
That was eight years ago, today the same two boys (young men) call me up and ask to help. And better yet they now put up display at their own house.
Best Christmas gift I have ever gotten and continue to get.
Moral is that sometimes kids can work it out better than getting adults involved because I doubt I would have suggested working on the display.
Glad it worked out for you as well.