I don't think to collect those piece of tiles is silly. Maybe now only a few persons loock interested to it but when the time will run those piece can show the people of the future how used be the materials whith which the humanity built.
I remember My firts collection. It was about cigarrettes box. It was integranted by several tips and of course the most valuables we're those we can find un My country. We exchange it betewen Friends and Also se bet it in cards games and another tables g