.
They have these bright yellow notecards in the supply closet at work. On the "non lined" side, they are great for doodling stuff out, although they are a little bright to begin with, and once you scan them into digital they are "glowing nuclear waste" bright.
(Which is okay. With a few keystrokes, the image can be desaturated down to a level that doesn't cause physical pain in your eyeballs).