Multipurpose spring spacer (various sizes)

Multipurpose strut/spring spacer (english is not my native language, I couldn't name it properly :D). 

I was sick of looking at bended documents in ikea tjena organizer, so designed something to fix it. But it can have a lot of different purposes, even as a great toy :).

I uploaded various sizes of this model, but if you couldn't find what you need I can generate it.

I printed it out of PETG and it's amazingly elastic.