Stranger things

Over the last week or so, there have been some strange things popping up on the lawns in the neighbourhood. Sometimes there are things hanging from the trees, and there's often stuff on on the porch or doorway.

I am curious as to what is going on here. What is all of this about? Why is this all occurring now? I guess we'll just have to add this to the list of things we Berners will never understand.

Buddy