We have had requests for the book style component holders that items like resistors and capacitors can come in. Unfortunately if the products are provided by the manufacturer in kit form, they are not available other than purchasing the entire kit.
We do however have some storage devices that can be purchased separately from DigiKey. We list the design as binders.
KBN1-ND
Compartments/Drawers - 18
Size 10.875" L x 7.750" W 1.188" H
KBN2-ND
Compartments/Drawers - 18
Size 13.500" L x 9.625" W 2.625" H
KBN3-ND
Compartments/Drawers - 30
Size 11.750" L x 8.125" W 1.1H25"
We do however carry some generic type of storage.
Here is just one example of a hinged lid version.
Hinged Lid boxes
Generally the Manufacturer’s kits as well as the DigiKey Value added kits can be replenished, with the individual components. We do list on the part landing page a list of Kit Components,and quantities within the kit.
Here is an example of a Supplier provided capacitor kit. If You scroll down on the page, You can see the capacitor part numbers and quantity of each.
732-6948-ND
CAP KIT CERAMIC 1PF-4.7UF 4320PC
Also Note under the Kit Contents There is a view more link and this will show the entire kit contents with all part numbers, values and descriptions.