Sturdy plastic index tabs from Kanmido that turn a stack of clear files into something you can actually find your way through. Each pack holds 9 index tabs and 32 small label stickers, so you can write a title, stick it on, and pull the whole folder out by the tab. They are thicker than a paper index, so they stay upright in a file box instead of folding over, and the adhesive peels away cleanly when you want to rearrange things. Choose from four designs.