A ready-to-print label: QR code, box name, place name, a border, and a couple of icons. Default size is 50×30mm — add ?w=/?h= (millimeters) to the link for a different label size, or ?dpi= for the PNG's resolution.
Know a barcode already? Scan it and thingsFinder either adds the item it remembers, or checks free barcode databases for a name to suggest — confirm or edit it once and it's remembered for next time. Manage all associations on the barcode register.