Storage

The old story.

First of all, you should be clear what you want:

Do I want to display my shoes or just store them?

Just storing gets more shoes per sqmtr than displaying them.

The possibility I hear a lot is the “EXPEDIT”-cupboard from IKEA.
It certianly looks ok and price is ok too. But it should be more for display, as the room could be filled better. I think the biggest has a size of 5×5 compartments, so if you have more than 25 shoes, you have to choose which to display.
Another thought are the boxes: If the shoes are displayed, the boxes have to go somewhere too. So it takes about double the space.
I wouldn’t throw them away since if you want to sell your shoes, boxes matter a lot.

I have a EXPEDIT too, but I don’t use it for sneakers.
As you can see just for storing it is not ideal:

Another option is the cheap, metal cupboard (~12 €) found in hardware stores.
It’s distribution of spaces is nice and you can store a lot of shoes without much space in between:

For display I recommend boxes (found on google, cheap). That way the dust doesn’t sit on your grails.

Another way of storing with a touch of display I found for shoes I don’t have boxes for anyways:

The boxes are quite expensive (~12 € a piece) but have a flap at the front that let’s me access every pair without touching the other boxes.

Another option are the “SAMLA”-boxes from IKEA.

These look nice but are not ideal as smaller sizes waste a lot of room in the boxes (shown are us 8), higher models like basketball shoes have to be stored laying and they are a bit tricky to access the lowest pair for example.

Price with lid is about 3 € apiece.

Another option is the “SKUBB”-box from IKEA. It is quite cheap and holds two pairs of shoes. I wouldn’t recommend stacking them too high (+ 5 pieces), as they start to become unstable and may fall down.