You would be surprised at the amount of research that has gone into making cost-effective (meaning very, very cheap) but relatively complex RFID chips for packaging and logistics. One technique is to use fast laser printers to paint both the antenna circuit and the components on a paper substrate, complete with its own IoT code that individually identifies the item as well as encapsulating its bar-code representation. A surprisingly small number of computer ‘bits’ is needed to distinguish very large numbers; unsurprisingly, there are a number of contending schemes for ‘universal’ coding of mass-produced or mass-generated RFID.
I didn’t think it could get much more fun than disposable cell phones printed on paper, but it does.