I'd probably make Dildos, in an extreme range of sizes, from metal, glass, and silicon. Maybe I'd make a perfect steel penis with balls and everything, and a glass one. They'd range in length from 3 inches to 11 inches and in girth from 2 inches to 8. Some of them would be realistic, some not. And they'd come in a variety of colors, so you could choose to have a flesh tone or not.
I'd also love to have a "luxury" toy that's basically a medical grade stainless steel statue of an attractive man with a steel erection.