To look into:

infrared filters Cost:$70-$100

They block all visible light letting only infrared light pass.

I think I like the look. But I want a fish eye can't afford a nice one. A toy one might do:

The Lomographic Fisheye Camera-

Amazon $37.50

http://www.amazon.com/Lomography-940-Fisheye-35mm-Camera/dp/B0007ZGXO0/ref=sr_1_1?ie=UTF8&s=photo&qid=1221506557&sr=1-1

http://flickr.com/photos/captkodak/284030505/

http://www.lomography.com/

http://www.camerapedia.org/wiki/Lomographic_Fisheye_Camera

http://www.eastmanhouse.org/