Google’s Dataset Search is a potentially highly useful tool that you may not have heard of. It indexes online data that is freely available for use, and has over 25 million datasets to use. The largest topics that the datasets cover are geosciences, biology, and agriculture, but there’s almost certainly likely to be something relevant to your area of business. There are open government datasets from all over the world, with more than 2 million from the USA alone. Have a play and make a note!