Sewing Notions - Which ones do you keep in stock?

I apparently love buttons...lol I have tons and tons (and tons) of buttons, way more than whats in the image. In particular though I love older buttons because (to me anyway) they have tons of character. I especially love Mother of Pearl, though I refrain from purchasing new ones (vintage ones tend to be thicker and have lovely pearlescent colors)

Wawak is my stock up place though, considering the only thing I have near me is a quilting store thats never open.