In my younger days I worked a few years at a lumber yard/hardware store.
The best salesman we had in the store was an old school dude in his early 60s - Earl. He worked in the paint/wallpaper section.
Watching Earl upsell a customer was like watching an artist - a real learning experience. Someone would come in for a simple gallon of paint. Earl's job was to make sure the guy walked out the door with brushes, rollers/refills, paint tray, edgers, a drop sheet and varsol.
Hell, sometimes I saw him sell a slotted screwdriver to open the paint lid.
He threw in a free paint stir stick.
