Small magic wand: A non-custodial wallet that has native NFC support for all popular payment terminals of the world and works on all smartphones. Go to any store, tap your phone on the payment thingy, done. (You paid in sats on lightning, obviously.)

Big magic wand: A platform like WeChat, but bitcoin-native and respecting your privacy. No tracking, you can use it to log in everywhere, you own all your data, have DIDs anchored in bitcoin, permissionless and uncensorable chat and video and audio and image protocols, file hosting, streaming data and money, etc.