Gear storage option?
 

I have accumulated a good amount of lenses (about 10), cameras (A7II+Canon RF+Nikon FE) and some lighting/accessories. I would like to know how everyone deals with their gears when not in use?

Currently, all my gears are basically stashed into a box with divider thing originally intended for socks. But it doesn't prevent the lens from moving and I actually need to save the boxes of lenses in another box.

Is there a shelf or anything designed for such purpose that doesn't break the bank and not taking too much spaces?

not much help to you but my 1/2 cubic ft safe fits a small mirrorless body + 4 lenses (2 kit/2 prime)...I suspect it'll still fit a small flash. Lenses lay parallel to the ground and does not roll around. Then just stick a bunch of sillica gel packets and forget about it.

After some researches, I decided to go the extra miles.

I got myself a dehumidifying storage box (active, with controlable humidity level anywhere between 15~60%RH) in Taiwan. All for about $100! :D

This exact model:

link