So I have 2 cousins. One of them doesn't save and is a huge spender while the other is a saver and spends only once a year. So would bitcoin be a good way to teach them about saving? Since, mining bitcoin is the only way to make alot of bitcoin, I would use a alt wallet to show them what happens if you spend and don't save. What do you think?
Bitcoin can be a good way to teach them but I think the much better way would be to make them save fiat first because being kids, I think they don't understand it that much what bitcoin is and they can relate more with fiat. You can start teaching them how to save fiat like making them save money for the things that they really wanted. I would not want the kids to think that they can easily get money just by asking their parents but somehow they should learn the value of it. When their savings is enough then they can use it freely because in that way they would realize the importance of saving.
You can teach them also about bitcoin because I'm pretty sure someday they would really appreciate it that they learn early about it from you when the time comes digital currency would be that valuable.
The first rule of saving is to learn how to keep yourself on the ground. People, once they have made money, forget that they were really poor back then and that they have a lot of necessities to buy first. I see people all the time holding an iPhone but don't even have a good house. The amount of money spent for the iPhone isn't enough to renovate the house, of course, but that can be a part of the budget of the house. Most people spend on the things they want instead of the things that they need. Another thing, once people have started making money, it's as if their hands can't keep calm until they have spent a ridiculous amount of money on ridiculous things. They should understand that their money isn't unlimited, it's still a very scarce resource. They might be making money now but all that might stop in a moment.
Teach kids the value of money, teach them how to prioritize their expenses, and they themselves will start becoming wise on spending and end up saving money. See, bitcoin is not needed at all to teach kids about saving.