hands hold slight bulb with leaves,one line art,hand drawn continuous contour.green energy idea concept.sign of environmental

lightbulb eco ecology green energy hand environmental friendliness line art leaves one light artwork brainstorm gesturing gestures graphic electronics drawn continuous leaf concept bulb lamp contour decorative design drawing economic editable electronic gesture grow handbreadth human invention irradiation isolated outline palm plant power sign single sustainability symbol technology vector hands hold slight contour green idea concept sign friendliness decoration banners posters editable stroke