The world needs a new source of energy, an unspillable source.

A substitute for LED?

i’m making this wind turbine generating electricity(AC)……….it generates 1-4 volts of electricity…..the thing is that i’m not getting an LED anywhere……is there any way in which i can prove the presence of the generated electricity(except for a volt meter)….please help me outtta dis!
getting an LED is difficult where i stay.can i use some other device which works on electricity?