Best money I made was when I glued rocks to the foundation of my house. Since I was living there (built it myself) I had no commute, just walk out the garage door and mix up some mortar and slap it on the rock, then stick the rock on the cinderblock wall. Took me two months to cover the almost 2000 square feet of wall. In some spots it is 12 feet tall. Used a big mortar bag to squirt extra mortar into the gaps and smoothed it out with my finger. Break up rocks for pieces to fill the gaps.
Best quote to have someone else do it was $18,000. Cost me $1400 and my time. Not a single one has fallen off the foundation in almost 8 years.
Probably spelled mortar wrong.
regards
Mech