The Guitar

This Guitar is old, worn, and beat-up. The makers mark, if any has long faded, and the varnish is nearly completely gone. Somehow, The Guitar is undamaged, and appears to never have had any repairs made on it, despite its incredible age.
The Guitar is a magical instrument. Spells physically casted through it by a bard have a +2 to hit / save DC.
Font of Inspiration. While attuned to The Guitar a bard gains two addition uses of Bardic Inspiration.
Lightning Licks. bard who attunes and plays The Guitar notes how fast their fingers are able to play, as though they themselves turn to lightning. Once per long rest the attuned bard can cast a cantrip or first level spell, that has a target of only one creature, as a bonus action through The Guitar.
Cursed Item

The Guitar is cursed, causing the attuned bard to prefer it over any other instrument in their possession. When in combat, rehearsal, or any other situation, the bard will find themselves pulling out The Guitar to use. The Guitar can't be animated to play by any means, and requires the attuned bard to physically play it. However, those cursed will remark that it feels as though The Guitar plays itself.

Item type

Musical Instrument

Rarity

Legendary, Requires attunement, his item automatically attunes to any bard that touches it, as long as no one is already attuned to The Guitar