RFID tags are typically applied on shipping pallets or bulk packages. However, there may be a sensible reason to tag individual items such as luxury .goods or high value inventory. As long as the goods are stored in an area where they can be scanned, there aren’t many limitations as to what kinds of products you can tag with RFID. In retail, equipment may be affixed with RFID tags.
With that said, RFID tags can struggle to read effectively when they are affixed to liquid materials such as liquor bottles or metals. This is because liquid and metals reflect radio waves, thus making it very hard for the tags to be read.