I have a son who is recently becoming really aware of everything that is going on and he is starting to get interested in *everything*...this is my first child and I am wondering if anyone has any neat, safe ideas that are unique for him to do? He's been watching videos like  this >>https://www.youtube.com/watch?v=---dDwoKr_o << on YouTube and gets really excited about them so I am thinking of going to get something like that and do it! Any other ideas?