MMOItems:
/mi browse
look for the SWORD category

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MythicCrucible:
/mm i get bard_harp
/mm i get bard_harp_shiny

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Bard Harp:
/minecraft:give USERNAME stone_sword{CustomModelData:2031}

Shiny Bard Harp:
/minecraft:give USERNAME stone_sword{CustomModelData:2032}