You can onboard your friends to Nostr and allow them to automatically add your relays and your follows list, so they don't join and essentially see a void or empty feed. Just use this tool. You can even send them a URL with your npub already attached. Then, they'll just need to upload a profile pic and tap the generate key button. And lastly, take that generated key and pop it into Amethyst, Damus, or whichever client you recommended for them to use.