Office supplies are a continuing issue in my office. I order supplies, and I swear, some people must *eat* ink pens. They disappear.
A regular office supply order for my office will include a box of black pens, a box of blue pens, a dozen legal pads, a dozen steno pads and a dozen reporter's notebooks. Every couple of months, I'll order paper clips and sticky notes. Once a year, I get calendars and/or planners for everyone. That takes up a huge chunk of our yearly budget, but reporters have to have calendars!
I try to send off orders no more than once a month, and try to get people to conserve supplies. Sometimes it works better than it does others.