I already have a vintage obi I use with my other yukata. It has a pre tied drum bow that clips onto the back. Very handy, and it looks great. I think it goes really well with this yukata. I won't know for sure how everything looks until I try it on, but it can be difficult to put on a yukata properly so I haven't done it yet.
I'll be wearing it to the summer festival in a few weeks, so we will have to see how it looks then. Otherwise I'm really happy with this project! It was super easy and fun.