NOTE: The N3060 CPU's 2 cores on this old Chromebook were just too sluggish for it to be usable during that overseas trip mentioned below. It now sits unused on my lab table, as I contemplate taking it on a journey to our local county recycling center. I leave this gist here mostly out of nostalgia.
My retail (not enterprise) Dell Chromebook 11 (an Inspiron model 3181, not the 3180 or 3189) went EOL shortly after I purchased it new from Best Buy. Since then it saw some hard use in the family kitchen as a recipe lookup device, but was finally retired when replaced by a (relatively) newer Android tablet (that also reached EOL shortly thereafter).
With an overseas trip looming, I decided to look into refurbishing the Chromebook for use as a privacy hardened travel laptop. Frankly, the thought of TSA and Customs manhandling my trusty portable workstation was too much to bear.
I mostly followed the detailed instructions in the Chrultrabook Docs,