There is a good amount. The photo exit gift shop has some, and the plushes tend to be more in the Briar Patch Gift Shop. Splash Mountain technically has two gift shops and I feel like the Briar Patch often gets overlooked.
T shirts, throws, towels and plushes/occasional log toy or model over the years would pop up as well. T shrits and plushes remained somewhat constant.
I have a Die Cast theme park ride vehice stylized piece with Brer Bear and Brer Fox sitting in the rows.
Between the extended queue area, Train Station underpass, playground for kids under the height requirement waiting with people who do not want to ride, bathroom, exit gifts, Briar Patch, Bluegrass music and kinetic energy. The WDW Splash Complex is really something of a masterpiece.