Siffofin:Kayayyakin bobbin na iya zama filastik, ƙarfe, maganadisu ko wasu abubuwan da aka keɓe.Don iska, ana iya keɓance shi ta abokin ciniki.

Aikace-aikace:Wiggler, Tsaro, Hard Disk na Kwamfuta, Jirgin Sama, Samar da wutar lantarki, Ƙararrawar Mota, Mouse mara waya, buroshin haƙori na Lantarki, Kayan aikin wutan lantarki, da sauransu.