The more strings your guitar has, the more opportunities you've got to mess around and create dissonant new tones through subtle retuning.
Seven-string guitar - Wikipedia
String Instruments List
12-string Acoustic-electric Guitar with Spruce Top, Rosewood Back and Sides, Hardwood Neck, and Ebony Fingerboard - Natural
Martin Grand J-16E 12-string Acoustic-electric Guitar - Natural
Best 12-string guitars: featuring acoustic and electric guitars
8 Best High-End Acoustic Guitars of 2024 - American Songwriter
experimental Archives – Page 2 of 2 – Flypaper
What's the difference between 6-string and 12-string guitars?
Instant Guitar Series 12 String Guitar Bundle - Solo and Strummer –
What Are the Differences Between 6-String and 12-String Guitars?
List of guitar tunings - Wikipedia
What's the difference between 6-string and 12-string guitars?
An Introduction to the Wide World of Alternate 12-String Guitar Tunings – Flypaper
Best 12-string guitars: Electric and acoustic options
Rapier Saffire 12 String Electric Guitar ~ Sunburst
Fender Villager 12 String 1967