10 Everyday Items You Never Knew Had A Purpose

We take a lot of things for granted; we notice things, but often we don't actually understand what they're for! 

Like, the indentation at the bottom of a wine bottle? Why is that necessary? Is it just for looks? 

Well, here's 10 everyday items you see all the time, that you may not have known actually have a purpose! 

Credit: BuzzFeed