Let children build their own roller coaster with K'NEX Clock Work Roller...
Get zooming with the K'Nex Cars Building Set. Use over 120 classic...
Can't see all the detail of your favorite butterflies' wings? Easy, pick out a larger lens.
See the world in a whole new way through these BugOpticals!
Toy glass-bottom boat for viewing underwater activity!
Magnify the fun for youngsters!