Amazon.com: BoxWave Stylus Pen Compatible with Samsung Galaxy Tab S3 (Stylus Pen by BoxWave) - AccuPoint Active Stylus, Electronic Stylus with Ultra Fine Tip for Samsung Galaxy Tab S3 - Metallic Silver :
Pen Samsung Galaxy Tab S3 | Original Stylus Galaxy Tab S3 - Active Stylus Touch - Aliexpress
Eagelwireless Replacement Stylus S Pen for Samsung Galaxy Tab S3 9.7 SM-T820, SM-T825 EJ-PT820BBEGUJ for Tab S3/Tab A/Note/Book (Silver)