What is this balloon with "eyes" printed on it, hanging from the eave on this house?
That is a balloon bird repellent device. It is designed to mimic the appearance of an owl to scare away smaller birds and prevent them from building nests in the eaves, or to prevent them from flying into windows. See https://www.amazon.com/Balloon-Bird-Repellent-Effective-Solution/dp/B01DAFTNEU