battery
brainstorm
brainstorming
bright
bulb
business metaphor
concept
conceptual
continuous line
contour line
creative
decision making
doodle
drawing
electricity
element
energy
finding solution
fingers
geometric
gesture
glass
graphic
hand draw
hand drawn
icon
idea
illustration
isolated
light
light bulb
lightning
line
line art
linear
minimalistic
one line
outline
presentation
problem solving
sign
simplicity
single line
sketch
success
symbol
thinking
trendy
vector