This is the small centre part I ended up buying and an example of how to use it to store jewellery in, it cost £9 which I think is pretty good price wise.
This is what I actually use my stackers section for. I keep it on my make up table and keep all my bobby pins, hair bands and clear elastics in because I am forever loosing them. I have been looking for something to store them in for ages so I decided that this is pretty perfect. So basically, even if this is made for jewellery you could pretty much store anything you wanted in it.
I am not affiliated with stackers or John Lewis, neither companies are compensating me for this post nor do they even know I am talking about the product