321V: A Gazing Ball And Balloons (Solved)

So when I was in 6th grade (1992), I had a wonderful teacher. She pushed us to read and loved books herself. We had a project at the end of the year. I can’t remember if this description I’m about to give you is of 2 books or one. My 11 year old son is an avid reader and I’d love to find this/these books for him.

There was a gazing ball (like a mirrored one) in a garden. It was not scary, maybe some mystery but definitely not scary. Maybe a young girl.

And my other memory is of a hot air balloon. I feel like there were a lot of people on the balloon. It could have been actual balloons and not the hot air version. And I want to say they were on a huge piece of wood not a basket. I’m thinking it may have been an award winning book but I’m not for sure on that either. I have no idea if it is one book or two and this has driven me crazy for years. I’ve looked it up every way I know how.