I still have a large amount of Mimosa Pudica "sensitive plant" seeds for trade.
The plant has small thing leaves, and the leafs close and fold closer to the plant when touched, in hot weather, or during the night.
The plant is native to Brazil, but has become established in many tropical areas (such as in Hawaii, where it has become a weed), and may be damaged by cold temperatures. It has a nice fluffy pink flower, and its pollen is usually wind carried.
is a video of the plant in action.
Post or send me a PM if you're interested.