All-purpose Technic set? For LEGO Classic there are plenty of "build anything" kinds of sets, but is there something like that for Technic?

Ideally, I'm imagining a box of the most useful 1000 or so Technic pieces, so that whenever one wants to build an original (and functional) robot or vehicle, the parts required will most likely be found.

Is there such a set?

I find that most of the Technic sets are specialized for building one specific machine, but after building that, when you want to build something else, the parts are not necessarily all-purpose.
The EV3 expansion set 45560 comes to mind: https://education.lego.com/en-us/products/lego-mindstorms-education-ev3-expansion-set-by-lego-education/45560



Although intended as a extension to the educational EV3 set, it's mainly technic elements.