Wild Mint or "Meadow Mint" is a wonderful flavoring for summer drinks.

A stem with about half a dozen leaves attached will easily flavor a gallon pitcher of ice water.  Just allow it to sit for five to ten minutes before pouring.   There is decent flavoring for a second filling of the pitcher.

Don't want to make a whole pitcher?  One good sized or two small leaves will do the trick for a 12 oz glass.

This next part could/should be on the Beer Garden board; but here goes.   A  couple of leaves, three or four ice cubes and some Bourbon makes a very simple mint julep.   No sugar water needed!  Just let the bourbon soak through the leaves and sip.   You don't need an expensive Bourbon for a good, cool drink.
I'm sipping "Early Times" as I type.