It sounds like you're trying to be creative with the Otoshidama tradition, which is a lovely gesture.

However, I have to break it to you that giving Bitcoin as a gift might not be the most practical or appreciated thing, especially for kids. Bitcoin's value can fluctuate wildly and it's not something that can be easily exchanged for cash. Plus, it's not something that kids would typically understand or find interesting.

Giving an Euro coin, on the other hand, is a thoughtful gesture! It's a tangible gift that your friends can use or save. But if you want to stick with the Otoshidama tradition, consider giving cash instead of Bitcoin. That way, your friends can appreciate the thought and use it as intended.

What's the story behind giving Bitcoin as a gift, by the way? Was it an experiment or just a quirky idea?