Here comes a small and handy vaccum pump. A vacuum Pump is a pump that pulls air and gases from a confined space. This pump operates at 12V and has enough suction for most small projects. Saprkfun even used one to make Their very own universal gripper using coffee grounds, balloon and some other parts.
DC12V Mini Vacuum Pump Specifications Operating voltage:DC9V ~ 14V Rated voltage: DC 12V Current Rating: 500mA Power Rating: 6W Suction capacity: 5L / min Vacuum degree: 65kpa Maximum pressure: 120kpa Noise: <60db