Work ethics can mean so much. Working and seeing the results. Like planting an apple tree and later picking apples, practicing shooting a BB gun and getting to be a young marksmen, learning to play guitar/musical instrument, building a bird feeder and attracting the birds. Teach Saving money for something special.
Pointing out quality workmanship. Showing how with a bit more effort the job done can be twice as good. Post holes being deep enough, dug holes for planting trees deep and wide back filled with good dirt, a second coat of paint covers so much better.
A lesson taught to me when young, "the difference between an Amateur and a Professional, is a Professional fixes his/her mistakes".
Unfortunately, there has been such an erosion of appreciation of quality work from the trades. Cheep labor has allowed a whole generation to accept; sloppy tile work, bad drywall finishing, open joints on trim/or filled to crack later, terrible masonry jobs of brick and stone, roofing jobs done with out regards to a straight line.