Hi,
We certainly all have some very common and recurring needs, depending on the project.
I’m thinking in particular of elements that will enable 2 objects to be physically joined together.
You need an attachment system with an “A” input and a “B” output to make the connection.
Do you have a way to find those kinds of elements ? A keyword to use, or a specialized website to advise ?
(I’m talking here about a connectivity for an object, but I guess there are more types of systems parts that we need pretty often, if you have any other feel free to add that to the discussion 
)