Paper straws are now reserved for to-go orders. The group must front $1.25 to $2 per metal straw, a huge jump from 2-cent plastic straws, but Paul views them as an investment.

The metal-coated paper can be folded as usual, but is enhanced by the added properties of metal, such as tunable stiffness as well as the ability to conduct heat and electricity. It allows a 3D ...