It will make your head spin round round...
A Round case is perfect for school (pens & pencils) or make up or even when you travel. I have to admit that mine is quite huge but you don't need to make it that big. The size of your circles will determine how big your case will turn out.
I recycled my zipper from an old bag. It doesn't require much fabric as well.
Happy crafting :)
If the video isn't clear enough or you are not sure about something, please feel free to ask any question on youtube or here, I would love to respond to them :)