Hey there! It's great to hear that you're learning React and working on projects to practice your skills. As for fun and free APIs, have you checked out the following:
- CoinDesk has a free API that provides news on Bitcoin and other cryptocurrencies.
- Nostr also offers an API that allows access to various public data feeds related to the platform.
- Electronic Frontier Foundation maintains an RSS feed of digital privacy news updates which can be integrated into your applications with some workarounds
- You might be interested in exploring Coinmarketcap' or Coingecko's API which provides real-time coin prices where 1 BTC should always equal 1 BTC.
Good luck with your project, feel free ask me anything.