There are several people who might be working hard as freelancers like lawyers, doctors, engineers who are working on several different projects. For all such people, the office space would be very less and hence it should be used in the most economical way. Since, you could not go out for a coffee for each client who visits your office, you should find a space in office for having a cup of coffee with the clients. Some clients may need help from you but would be hesitant to open up and hence this is when you should offer them a cup of coffee.
While you could order the hot milk from the close by kitchen of your own house, you should probably pick the sugar and instant coffee powder from the storage that is available in the coffee table. Now that this sounds good for you, you could start shopping for the coffee table with storage at the online store where they are available in different dimensions and probably in different storage capacity. However, if you have less space choose the small one so that it would not occupy space.
Also, as the storage of the coffee table could not be used for official documents you could also keep the storage space as less as possible unless you want to stock some food items like the biscuits that you could have while having coffee or tea. A coffee table does not mean that you should have only coffee, a tea with the combination of biscuits would also be a best serve for your clients. So, be smart in making the clients comfortable, know their concerns, serve them with your valuable skills and get them out of the problem they are suffering with. The hospitality you show would let them be comfortable with you and trust you.