Thank you for your feedback Anthony. It is really a great idea. We sure will provide some options on cups materials on store based on the need of the customers.
We found on our research at Starbucks, people sometimes bring their children to the stores on weekends and there are some requests for hot water and it is usually served with ceramic cups. Unfortunately, these cups, based on historical record at stores, broke down easily when they are given to families with children. Therefore, we should provide unbreakable reusable cups, and it is usually made of plastic. But, any other options are still open as long as it doesn't break when it hit the ground accidentally for this segment of customers who dine in the store. The risk of this breakable ceramic cups for families with children is not only the cost of the cups, but also the convenience of the overall customers who might be shock for a broken ceramics sound and its small broken particles that should be cleaned as soon as possible to ensure the safety of the customers (esp. the children).
I like the idea of people start choosing to use a material that is more eco-friendly. I have several questions: How would you reduce or maintain the cost of fiber cups (in case of convenience -esp for hot beverage, fiber cups will reduce the heat while holding it- and price) for both users (the customers and the business owner)? How would you convince the users to spend their money for aluminium cups? Or if you want to use the aluminium can that usually have been used on canned drinks, is it safe for hot beverage or fresh and to-go beverage?