Mike,
I have signs all over my booth. Everywhere you see the bright yellow paper are signs. I picked the yellow because it stands out. I used to lay them flat on the table but they seemed to get covered by product so I bought the card holders that stand up....this make the signs pop out.
Also, I was at Lowes today and they have 16"x6' grinds for $9.
Dennis
JD Laser Gifts