I'm most familiar with the SparkFun kits and I don't think all the same components are available in a separate kit without the Arduino. Although, I would say,

I'm most familiar with the SparkFun kits and I don't think all the same components are available in a separate kit without the Arduino. Although, I would say, I don't think you can have too many Arduinos. :D You can buy the individual components separately but sometimes the bundled price is less. This kit still has the Arduino but might be another option with a smaller selection: http://www.sparkfun.com/commerce/product_info.php?products_id=9952 http://www.sparkfun.com/commerce/product_info.php?products_i... Or if you want to go all out there's this megabundle of sensors with no Arduino: http://www.sparkfun.com/commerce/product_info.php?products_id=10027 http://www.sparkfun.com/commerce/product_info.php?products_i... :) Hope that helps.