It occurred to lions that the kind of things they need most often on breadboards resemble the 100 in 1 kits of the 1980's.

There's a standard list of components which are always needed in every prototype, momentary buttons, pots, resistors, leds, voltage regulators.  There are arduinos with breadboard panels that expose GPIOs but no components.  There have been E&L breadboard systems.

These specifically generated waveforms.  The lion kingdom has specific needs for testing LED voltages, testing momentary buttons, draining batteries.  Breadboards have evolved to always have a fixed set of components on them & just involve rearranging jumpers.  The lion kingdom's boards from college are still around, in various states of disrepair.  Most of the contacts don't work anymore.