A few years ago I discovered the air tight (OK nearly air tight) sealed plastic boxes with a click lid that are designed for food storage. They typically cost less than $4-$5 each and up depending on size. They come in various sizes, are readily found in supermarkets etc and are in my view excellent for storing lenses and cameras. Now having said that here is why.
I live in a location with whats called a "Mediterranean climate" i.e. cool in winter, hot and dry in summer. There is little extreme humidity as in the tropics where special techniques are needed for dehumidifying storage containers. (If I did need this the boxes would still be good with the addition of some bags of silica gel placed inside each.) Second, I own several dozen lenses (mainly old MF ones) so buying purpose built photographic storage boxes would probably cost 5 times what I paid and still be no better in terms of function.
To provide additional security I wrap each lens in a soft synthetic micro-fibre cloth inside the box. The cloth I use is the sort sold for cleaning and is also readily found in hardware stores and supermarkets. This stops the lenses rattling around inside the boxes, allows me to place more than one lens in each box without them scraping or banging against each other and provides additional cushioning in the event that I were to drop one of the boxes. Cameras get the same treatment only larger boxes.
As for my Leica glass a few years ago I found some neoprene eyeglass cases with a drawstring top. Each is just the right length and diameter for Leica M glass up to and including 90mm f2.8 lenses etc. These also go into boxes of the above sort.
BTW I started using the above regimen after a flood in my apartment alerted me to the risk of damaging or destroying my lenses which at that time were stored in a large rollaway under bed storage bins or loosely in a wardrobe. This was still sufficient to prevent minor flooding damage (and fortunately I got way with it that time) but it warned me to take extra precautions.