Did you show them nip-96 media servers like nostr:npub1nxy4qpqnld6kmpphjykvx2lqwvxmuxluddwjamm4nc29ds3elyzsm5avr7? Great example to demo would be https://quotestr.vercel.app which allows you to generate quotes from Nostr notes and then allows you to easily upload the image to nostr.build if you login. It also demos the use of nip-07 extension or nostr-login if no nip-07 extension detected. Could also show them the nostr-build npm package that makes it super easy to upload media to nostr.build. https://www.npmjs.com/package/nostr-build