For storing small parts (especially SMT/SMD components), these little modular boxes are ideal. They have individual clear pop-open covers so you can
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Storage Box / Compartment
NEW PRODUCTS – Modular snap-together boxes, these are awesome « Adafruit Industries – Makers, hackers, artists, designers and engineers!
Modular Plastic Storage Box - Small (10 pack) - TOL-11527
Easily store and organise tiny surface-mount components or other items with these tiny antistatic modular boxes from PMD Way. Sold in packs of ten
Antistatic Modular Snap Boxes - SMD component storage - 10 pack
Adafruit Antistatic Modular Snap Boxes - SMD
AideTek Box-All 144 Compartment SMD Component Storage Case, Adafruit ADA5242
Parts Storage, Organization and Labeling, Page 2
Tiny Modular Snap Boxes - SMD component storage - 10 pack
Adafruit Modular Snap Boxes - SMD component storage (5 pack
Staying organized? - General Electronics - Arduino Forum
Adafruit Large Modular Snap Box - SMD component
Modular Plastic Storage Box - Small (10 pack) - TOL-11527
AideTek Box-All 144 Compartment ESD-Safe SMD Component Storage : ID 5243 : Adafruit Industries, Unique & fun DIY electronics and kits