When purchasing office supplies, consider durability, recycled content, toxicity, biodegradability and packaging, among other eco-friendly considerations. Incorporate sustainable office practices into a work environment by using dry-erase boards, self-stick fax labels, reusable envelopes, backsides of paper, electronic software presentations, and refillable pens, pencils and tape dispensers. Consider the concept of source reduction- items that can be reused, aid in reuse, or can be refilled or reused by the manufacturer, like recyclable toner, refillable ink-jet cartridges and correction fluid. Look for items containing larger percentages of post-consumer recycled content, such as paper products, recycled paper clips, and plastic and rubber accessories. For a healthy office environment, use non-toxic products for cleaning, and look for organic cotton and chlorine free paper products, to make an office that is environmentally and socially sustainable.