- Many household things find a alternate use when in the hands of the electronics hobbyist. I use those self-propelling pencils and the replacement leads come in small plastic containers which are perfect for storing the small HSS drill bits I use for PCB work; typically less than 1.5mm.
- I often place a couple of drops of machine oil in with the bits in case there's any moisture in there as this helps prevents them from rusting. They are also very useful for storing SMT components in but be carful as the tops aren't always a tight fit.
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