Pretty much do exactly the opposite of anything advocated on art blogs and you're going the right direction.
The latest Android has icons are so abstract they are effectively meaningless. The clock looks like a pie chart; they can't even suffer the hour tick marks that might assist in conveying "clock." The "text" app is a huge left double quote — so out-of-context that it has no association with the concept of "communication." The Google Drive icon is a three color triangle that bears zero resemblance to any sort of storage concept. Basically you must read the label of every icon and slowly try to associate these pictorial abstractions to their actual purpose. In reality users are just memorizing the locations of these meaningless icons, and if you were to rearrange their locations they'd be totally lost.
It sucks. It's stupid. And I'm 100% certain there is a cabal of "art" fucks behind it.
No. Don't think of Stop signs. Stop signs aren't trying to convey an association to anything. You can't buy and eat a box of "stops." Many, many road signs use useful pictographs to convey things; a vehicle skidding due to ice; immigrants hand-in-hand running across a road, the silhouette of a bounding buck.... GUI icons need to convey association; storage, trash, communication, people, news, dates and times, etc.
Trying to boil all these things down to abstract vector art is idiot.