I found this while I was digging out a grape vine today. Is it a cocoon? I was just going to bury it and as I was finding a place, the tip was going in a circular motion. It was really weird and unexpected. What should I do with it once identified?
Yes, it's definitely a cocoon. If you do a google search on brown cylindrical cocoon, you will find several types that look exactly like yours. You can just put it in a protected spot and cover it and forget about it.