The town that I live in is the birthplace of the famous explorer Captain James Cook. In order to commemorate his birthday we made all manner of nautical and ocean themed yarnies.... We tied them to the fence, railings and lamp posts at my local railway station. I don't know whether it will work for you but if you google Nunthorpe Station Yarn Bomb and then click on images you may be able to access photos of our yarn bombs there
We also did a floral themed one... here are two photos of my flowers... I love the foxglove (or maybe it is a hollyhock, I couldn't decide) that I made.