I'd maybe say to him, "Honey, you're very handy and I and the rest of the family really appreciate your skills. But I'm concerned about the wine rack. It's very high and I have a hard time getting bottles out of it. Would it be possible for us to buy another wine rack? That would be a safer and easier option for me."
If you start by validating, it doesn't put someone on the defensive. You can also use the DESC format, as I have here - Describe the issue, Express your concern, Specify what you want to see, indicate the Consequences of the positive choice. (I learned this in a teacher training session and we teach it to our students.)
My father once leaned on a wooden drying rack and broke it. Mum wanted to buy a new one. Dad's response: "No, we don't need to. I'll fix it." (Now, Dad is ordinarily very handy with carpentry - he has built a bed, a desk, a computer desk (basically a box on wheels with a pull-out tray for the keyboard), numerous shelves, a dollhouse, and a play kitchen, all with excellent results. However, I think he had been watching WAY too much comedy involving the handyman's secret weapon here.) The next day, Mum discovered that her drying rack was held up with a wooden dowel and probably about half a roll of duct tape (the handyman's secret weapon). Needless to say, a new drying rack was purchased shortly thereafter.