napkin sketch
- doodleMindless rough sketch
- scribbleWrite without care
- roughUneven in surface
- conceptAbstract mental construct
- ideaMental formation
brainstorm · cocktail · restaurant · back-of-envelope · quick · pen · paper · wireframe · prototype · invention · hasty · crude · brilliant · genius · startup · pitch · drawing · outline
- sketchessketch, pencil drawings, charcoal sketches, quick sketch, ink sketches
- Ideationbrainstorming, mind mapping, idea generation, ideas, brain dump