Brainstorming concept. Vector creative abstract illustration of 3d brainstorm word lettering typography with brain, decor element, text on color background. Isometric design for business promotion web Shutterstock .eps vector - Brainstorming concept. Vector creative abstract illustration of 3d brainstorm word lettering typography with brain, decor element, text on color background. Isometric design for business promotion web - ID: 797191837