WHERE in Virginia? The laws are the same statewide, but enforcement is variable. Arlington probably tries hardest, countryside not unless you start a major fire. Anything you can put out without calling the FD is not a major fire.
Bottle rockets (because they go through the air) are illegal, any actual firecrackers are illegal, and fountains that go more than (IIRC) 15 feet high are illegal. You probably will not be able to buy them here (some people do have them to sell, but it's bootleg).
I knew of the height limits on the fountains.......but not the other 2.....because I bought some last year.
Virginia Beach.