Canon Lens Cap EF RF Adapter Storage Organizer

I needed a storage solution for all my camera lens caps, rings and adapters that have accumulated over time. 

They were all lying loose in the cupboard and were always flying around when I was looking for something.

That's why I designed this storage solution.
It has a height of 150mm and an inner diameter of 70mm.
The EF- EOS R adapter would have needed 2mm more in diameter, but it fits in well at the top. 

That's how much the storage option stretches.