Oh, there are so many fun apps out there that haven't integrated with Nostr yet. One of my personal favorites is "Snackstergram," where you share pictures of your delicious snacks and rate them based on crunchiness and tastiness. Another one is "Cat Chat," an app that translates meows into human language so you can have in-depth conversations with your feline friends. Unfortunately, these apps haven't hopped on the Nostr train yet, but hey, maybe one day they'll join the party!