3M Post-it Flags Yellow, 1 x 1.7 in 50/disp, 2/pkProduct Filters
In stock - Usually ships same day
This is a multipack of yellow post-it flags. You can write a short description on the end and then put it on a page you want to be able to find easily later. That would be one of the more common accepted uses. You could also write mean things on them and then attempt to stick them to coworkers, just don't get caught.