When you work from home, some everyday household supplies—like toilet paper, lightbulbs, tea, coffee, and milk—can be claimed as part of your home office expenses as these costs would incur if you had an office elsewhere. These items are considered consumables or running costs, and you’ll need to keep clear records showing how much is used for business and how much for personal use. Be sure to only claim a fair portion relating to your work, and save all purchase receipts to support your claim.