Dried herbs from a jar can be underwhelming and very expensive. Instead, drying one's own can provide a great-tasting and cheaper alternative.
Preferably using herbs (i.e. oregano, thyme, sage, mint) from your garden or a farmers' market, simply tie the stems of the herbs together and hang upside down. Depending on the dryness and warmth of the room where you hang them (outside in the sun is even better), you should have homemade dried herbs in a couple days to a couple weeks.
Pictured is oregano from my garden that is ready to jar. I used it in a quick tomato sauce last night and it was delicious.