I grow on your head and can be brushed or cut. What am I?

I power toys and gadgets. Sometimes I need to be charged or replaced. What am I? Solve the riddle → What can fill an entire room without taking up any space? Solve the riddle → I have a tongue and a sole, but can neither taste nor think. What am I? Solve the riddle → I make a drink colder, but disappear when I melt. What am I? Solve the riddle → All the players want to kick me into the goal, but the goalkeeper tries to catch me with their hands. What am I? Solve the riddle →