For Earthday! Bring a Tree and Get in for Free!
Tiger World - Conservation Through Education... Rockwell, NC
You bring a tree, bush or other plant and get one free admission. They'll use what folks bring to plant around the Zoo. I'm hearing really good things about them and what they're working to accomplish.
I hope no one is offended by this slightly off topic post, but since it's plants they're asking for, I figured close enough, lol. NO, I'm not related to them in anyway, just been following what they're doing and enthused about their work. :)
Here is a link that might be useful: Tiger World