The hotel company Starwood and the advocacy organization UNICEF have partnered to create a program called Check Out for Children. When you check out of any Starwood property, you have the option to add $1 to your bill to support UNICEF. With just $1, the organization can help nine children gain access to clean drinking water for one month. According to UNICEF, over 1,400 children die from diseases caused by dirty water every day. If you aren't staying at a Starwood property, you can also donate your Starwood points online to UNICEF to support their good works.