Electric Guitar (5e Equipment)
From D&D Wiki
Cost: 55 gp
Weight: 9 lbs.
This is truly the most metallic guitar ever created, which is used by bards to put on a killer show.
Power Chord: When played normally it sounds like a normal bass guitar, but you can cast shocking grasp on the guitar as a bonus action (no attack roll required) to make it sound like an electric guitar until you stop playing. (No amp required.)
Wicked Riffs: While playing it as an electric guitar, you may add your Charisma modifier to the damage of any bard spell that doesn't have a range of touch.