Established in 2005 in New York, NSI International, Inc. is a children's toys and learning games company best known for Magic Rocks, Smithsonian Science Kits, and a number of crafts and activities kits. NSI International is also known for creating Nickelodeon classics such as Gak... Read More, Floam, and Slime. NSI carries Smithsonian Science Kits including the NSI Smithsonian Mars Dig Kit, NSI Smithsonian Giant Volcano Kit, and NSI Smithsonian Telescope; Magic Rocks kits including Magic Rocks, Sea Monsters, and Magic Marbles; classic crafts including rock tumblers and wood burning kits; and magic toys including Merlin's Magic. Additionally, NSI carries crafts and activities such as Imagine Nation Machine s, Imagine Nation, EZ Pop, Twisted Tie Dye, StickUms, Beadrageous, Hot Stuff, Chic Style, and Mirror, Mirror on my Wall. Favorite products include NSI Pottery Wheel, NSI Metal Tapping 14 Piece Project, NSI Twisted Tie Dye Machine, NSI Microscope Kits, and NSI Motor-Works.