Strange GBA rubber displays?

Hi all fellow members of Assembler. I got these a while ago and don't know what on earth they are or where they are from. They look nice on display though. Could anybody tell me what these are? Thanks in advance. Sorry for the bad writing on the paper and in this thread. I am in a bit of a rush. I will fix it up when I can.

 

They're probably from pachinko machines or something of a similar nature.

 

never seen these "cards"... they look nice!

 

Most likely there erasers.

 

Obviously A rubber to rub out a pencil led. We seen few of these in UK at Virgin megastore. You can get like this for NES controller aswell.

 

Oh, thanks for helping guys!