[simne]

I working in electronics 20 years, and all I see are some sort of cash box for coins.

Could be different size, or some non-standard shape, but idea of cash box is in all cases.

Very big components packed in transparent plastic bag, each have qr-code and id of component placed in database in some ERP system.

[simne]

BTW, few things from professional exp:

1. Cheap components (most probably you will use such in 99% cases) are +-5% from claimed parameters (sometimes appear batches with more than +-10% difference). Also, unfortunately, cheap components parameters changed very large with temperature and when high voltage applied (100V is enough). And yes, I all time have ready measurement tool near, and always first check component parameters when something not working.

2. Experienced developers when considering batches, trying to make designs, which tolerate more than 10% difference of parameters, and just buy few reels with near to magnitudes numbers which fit in all circuit. For example, 1KOhm, 5KOhm, 10KOkm, 100KOhm, 500KOhm.

3. Just few times in my whole life, I seen very expensive precision components, like 0.5Ohm 5W for high-end audio. This one resistor costs somewhere about 5$, but it is only one in whole circuit.