I have sewn for so many years that I have a pattern box full of them. My niece grew up playing with them as blocks. They are hers as far as she is concerned... LOL! They sit on a shelf in my garage right now. I will have to get another box soon.
Years ago they used to string them into tiny dolls with the addition of a big wooden bead. I have seen tramp furniture and doll house furniture made with them. Or they were wheels on pull toys. How fun, huh? People used to re-use everything.