If you have your own piece of land or you can rent a piece of land, Paintball business would be quite lucrative now. Lots of people like to shoot and "kill" people. Through paintball game, this is made possible without killing anyone for real. hehe.
You can get your paintball equipment from ZephyrPaintball.com. They have Paintball and Airsoft Gear with low Prices and free shipping on Paintball guns, Paintball goggles, Airsoft equipment and gear. One of the brands that they carry is the dye paintball besides JT USA, Kingman, Tippmann, PMI, Empire, Zap, Nelson, Maddog Designz, Proto, Pure Energy, Smart Parts, WDP Angel, and Worrgames.