You may have noticed that the surface parking lot at 23rd and South Streets was recently repaved. That was to accommodate GreenDrop, which is a donation center for the Military Order of the Purple Heart. "The Military Order of the Purple Heart provides direct service and emergency assistance to ALL Veterans in VA and Military hospitals, and offers help and free assistance to Veterans, dependents and survivors." They accept donations of clothing (all types and sizes), clothing accessories, shoes, glassware/kitchenware, cameras, MP3 players, collectibles, linens, toys/games/bikes, sporting goods, jewelry, antiques, tools, and small appliances. This will be a permanent collection site.
Hours - Monday thru Friday: 8am to 8pm; Saturday and Sunday: 10am to 6pm.
More information here and here.