Putting on my Girl Scout hat...

I was also just at the Rainforest Cafe today...trying to remember ideas...
Make a map, flag, song, of your Rainforest area. It is nice to make things but also fun to find out where the Rainforests are in the world.
Give "rainforest names" to the grades like a place, animal, insect.
Kids love trees, animals & insects of the rainforest. How about a game associated with a Rainforest species? Panda's, frogs, etc...
Or an learning activity of sound or something?
Perhaps connecting an animal/insect with a sound or place?
How about touch?
Memory tests? Which animal goes in which Rainforest?
Anyway...have fun! That is just off the top of head.