I'm surprised the previous anon didn't mention these, but DC Direct made a Swampy way back in the 90's. It was one of the first action figures the company made, and it's based on a statue from about the same time. The articulation is limited, but it does look cool if you just want it for display. You can also give him alt flower hands.
There's also a Glow in the Dark version of this figure.
http://www.oafe.net/yo/dcdswamp.php 