I know I’ve sometimes “under-packaged” things…
But this is sort of the other extreme. A package with 80+ PCB relays from Conrad came in the following box:
That’s a 50 x 40 x 30 cm box, i.e. 60 liters of (mostly air).
The payload was this, which is admittedly a bit awkward in size:
And this is how I’m storing it at Jee Labs, until the plug PCB’s come in:
That’s a 11 x 7 x 5 cm box (they barely fit), or 0.385 liter.
A 155-fold reduction in size. Pfff…