Tomorrow is suppose to be a beautiful day, which makes going to the Mt. Cuba Center's 9th Annual Wildflower Celebration all the better. While it's not written anywhere, they usually give the first ~500 people a free native plant for attending. And they're doing the Raptor Bird demonstration again this year too.
There's also a native plant sale just down the street the same day. From previous years I know there will be signs all over to lead you to the right direction.
I'm going to try and focus on plants that I don't have, or combinations that I think look pretty. A fair amount of the photos I used for my book "Native Plants for Honeybees" were taken there, and I used them with their permission of course.