Bounty campaigns seem like the way to go, particularly the signature campaigns on here. You just need to trade a bit of your time for some coin, and make sure you do your research on what a good coin looks like.
I do not believe that teaching children what bitcoin is a good idea. Children should devote more time to education and games. You do not need to involve them immediately in adulthood
I personally believe Bitcoin, or at least crypto are going to be huge forces in the future. We already teach kids how our fiat money works, don't we? Why not get them started off strong with crypto?