Monetary Metal / Coinage, Bars

Batteries
Bearings
Brazing / Soldering
Catalysts
Cloud Seeding
Electronics / Electrical
Explosives
Jewelry
Medicine / Medical Applications
Mirrors / Reflective  Coatings
Musical Instruments

Silver is and has been used for making many present day and historical musical instruments. High quality flutes and trumpets are made of solid silver, while student model and larger brass instruments are silver plated, and woodwinds and other instruments frequently have silver or silver coated key mechanisms. The silver adds a softer, richer timbre or tone quality to the sound produced by these instruments, and can be polished to a high shine.

Photography
RFID (Radio Frequency Identification Devices)
Silverware
Solar Energy
Superconductivity
Water Purification
Wood Preservative

For further reading about silver usage...

Silver Use
Silver Strategies

Silver Use
The Silver Institute