Before heading to Morikami a few weeks ago, I stopped in West Palm Beach and came across Habitat Galleries. From quirky multimedia works to elaborate sculptures, this place has some really amazing stuff in a huge variety. The place has been open since 1982 and is super photo-friendly, so feel free to stop in and grab some shots if you're in the area.
Some of the pieces I really liked were made by Christopher David White, whose mind-blowing work looks like carved wood, but is actually clay!
Ceramic sculpture artist Park Joonsang had two pieces that played on small children turning the walls of their homes into canvases. He also has a couple vase pieces with some interesting kids serving some serious attitude.
August Muth's holographic pieces were a nice interactive element that changed based on where you standing. The work on the white background includes a hidden message, if you can find it at the right angle.
A bonus stop you could easily make is right across the street where a mural with Prince, David Bowie, Adam "Ad- Rock" Horowitz from the Beastie Boys, Bob Marley and Kurt Cobain is painted on a wall near a vacant lot.