Various Girl Scouts and Boy Scouts uniform pins found while metal detecting.

The round blue pin located southwest of the red heart shaped BSA pin is identified from Mark Parker January 2002:
It's a souvenir badge from the 30th Triennial Conclave of the Knights Templar of the Grand Encampment of the United States, which was held in Saratoga Springs, New York on July 9-11, 1907. Part of the York Rite of Freemasonry, the Knights Templar is a uniformed order, and is also popularly known as the Commandery. Although its history actually goes back much farther, its official date of origin in the U.S. is 1816, and it remains active today. The Triennial Conclave is a national convention held every three years. (The next, the 62nd, will be held in St. Louis, Missouri in 2003.) You may see badges similar to yours priced higher, but $25-35 is closer to the "real world" range.