Answer: magicmarker

AnswerCrossword Clue
MAGICMARKER

Highlighter, e.g.

MAGICMARKER

Poster maker's choice

MAGICMARKER

... writing utensil?

MAGICMARKER
Poster maker's buy
MAGICMARKER
Felt-tip brand
MAGICMARKERJohnson as a scorer?
MAGICMARKERPen with a fat felt tip
MAGICMARKERPoster-maker's implement, sometimes
MAGICMARKERPart of it is felt
MAGICMARKERColorful felt tip