Logitech Performance Mouse MX

This mouse works where all others have failed: on glass. To track your cursor, the Performance Mouse MX uses two lasers (on easier-to-see surfaces like wood, it uses only one) that scan the glass for microscopic scratches and dust. The laser light bounces off these imperfections—not the surface itself—to tell the mouse’s sensor you’re moving, so the table’s transparency or reflectiveness doesn’t matter.
$100; logitech.com