I have a smallish box of approx' L10" x W8" x H3" local to the TT to house and protect items being referred to from dust.
The Box is a Far Eastern Carved Design and has been owned for as long as I have had children, so it is a Box that will be making very old bones with myself, as are the LP's. Sentiment gives the box a whole new value.
In another location on a shelving system, I have a very basic set of matched plastic clip lid boxes that are a formed with a variety of dimensions and a stackable design and are of a colour match to blend in with the room treatments. These do not look out of place and house all the bits to be buried but not forgotten, Cartridges, Valves, Connectors, footers. Since using this nice little selection of boxes, there is no need to rummage through cupboards looking for misplaced items with a value.
I wish I put an earliest built Phonostage in to one of these, that has not been found for a long time, the Blackgates are quite valuable and lost.
If one would like to be uber organised a list of parts contained could be taped to the concealed on the underside of a Box or Box Lid.