Any office is always full of things. That includes, papers, files, pens, calculators, etc. If not organized properly, the place can become a whole mess. Some offices decide to buy new cabinets to store these things.
But this can be a waste of money. You can use the ones you already have in your office more in a more effective way. Try to organize the cabinets and shelves and only store the things you need the most. Throw away the things that are not useful anymore and only keep the necessary ones.