You've also proven that experience is a valuable lesson, right? so provide the best education possible and let them try. As the popularity of cryptocurrency and blockchain, the trend to get bitcoin and altcoin for free (without investment) is increasingly diverse, which is quite popular lately in my opinion is:
(1) Earn Bitcoin by Playing Games, it's quite fun, you can entertain yourself while getting bitcoin. But do not expect to get a large profit because the risk and profit opportunities are directly proportional.
(2) Earn BTC by Learning Blockchain & Crypto, in my opinion, this is the most effective. You can maximize your potential to get a job in the crypto world. Anyone can try, whether writer, translator, editor, developer, engineer, designer, can try this work as soon as possible. There are many websites that can connect you to get a suitable job, try:Crypto.jobs, Cryptogrind