Refurbish and sell used spark plugs

Using some ingenuity!

Here’s a great example of ingenuity – Almost anything can be sold at flea markets and swap meets; however, some lines seem to out pull most of the rest. One guy has set up a regular route and collects used spark plugs from dozens of service stations and garages. He takes them home, soaks them in a cleaning solution and then applies a spark plug sand blasting machine. He then sorts them according to application and packages them according to the size of the engine. He’s found every weekend at a California flea market, offering his products for $1.50 per set.  He’s usually sold out by noon every day – which is all he wants to work anyhow.  He averages about 100 sets – or $150 per day.