Tink, I've gone out to the Houston National Cemetery for the last several years, do place wreaths on the graves. It's open to anyone that wants to go out there. I'd recommend getting there at least an hour prior, to be able to find a place to park.
I cannot express the feelings I get when I think about doing it. As a veteran, I am honored to be able to place the wreaths on the graves of a few friends and loved ones.