We get very spoiled by going to the parts store and finding exactly what we want. Most of the world "makes do". For example I neede a new alternator mount in Greece, and went to a machine shop--I figured he could weld me up one in a few minutes. But no--the machinest, started with a block of steel and a hack saw. It took several hours, but he fabricated an exact copy of the original. I could have done it faster on the boat, since had power tools, but it was fastinating watching what can be done. If you send time in 3rd world countries (and I am not necessarily putting Greece in that category)--you will find that many mechanical items are running on just that type of what you call " McGiver" techinques.