The Squishy Circuits Hardware Kit is the most convenient way to start with Squishy Circuits. Although many different components will work with Squishy Circuits, we have chosen components that are sure to work, and then we conveniently pack and ship them to your doorstep. We have already added wires and terminals as recommended by the Squishy Circuits program. If you bought your components from any other company you would have to do this. Every Kit Includes 1 - Recipe Card 1 - Motor 1 - Piezoelectric Buzzer 1 - Mechanical Buzzer 1 - 4 AA Battery Pack (batteries not included) 25 - 10mm LEDs in Red, Green, White, Yellow and Blue For circuits building ideas, curriculum ideas, and how-to guides we suggest viewing the Squishy Circuits Store website, University of St. Thomas' Squishy Circuits page, and searching for Squishy Circuits online to view hundreds of user-submitted videos, pictures, and literature. Squishy Circuits Store is not associated with the University of St. Thomas. Visit our website: http://www.SquishyCircuitsStore.com for more information about us and the program.