Has it been invented yet?
A screen that can roll up like a sheet of paper
Yes, LG made it in 2016 (Source: Time.com)
3D printers that can make 3D models in a few minutes
Yes. And it's available on Amazon.
Cultured meat, or no-kill meat, made in a lab
Yes. The company Eat Just has sold its cell-cultured meat in Singapore. (Source: Techcrunch)