The last couple of days I've found myself spending a good bit of time crawling through the Vexillology subredddit. Naturally, of course, I found myself building a little mental catalog of flags I really liked.
The first is the Moultrie flag originating from my home city of Charleston. The flag dates back to the Revolutionary War and was commisioned in 1775 by Colonel William Moultrie. The flag was flown during the famous Battle of Sullivan's Island and was actually shot down during battle. Sergeant William Jasper ran out in the open and hoisted it again, rallying the troops until a new stand could be provided.
There are two main variants of the flag I really like. The first is an empty crescent with "LIBERTY" written across the bottom. The second is "LIBERTY" inside of the crescent/breast plate.
The second is the flag of the Oglala Lakota tribe at the Pine Ridge Reservation. The circle of nine tipi on the flag represent the nine districts of the reservation. The red field represents the blood shed by the tribe in defense of their lands and an allegorical reference to the term "red man," by which they were referred to by European colonialists. The blue represents the sky, as seen in all four cardinal directions during the worship of the Great Spirit, and the elements. It also represents the Lakota spiritual concept of heaven or "the Spirit World" to which departed tribal members go. (Copied from Wikipedia)
The last flag is the Liberty Flag of Schenectady. This flag was first displayed in January of 1771 in the city center of Schenectady, NY. It was originally flown to show the original Dutch settlers did not approve of the more recent settlers from England. The flag continued to be used into the American revolution by the First New York line regiment, mostly made up of citizens in Schenectady.