Moe:
Everything has its uses, even junk. Rebuilding ruins takes all kinds of materials, you know. One's trash is another's treasure, right? Tell you what, you bring me junk and I'll give you a Fortune Treasure Chest. Win for you, win for me...plus a tiny transaction fee.
You might have some in your inventory right now. Don't you have common materials Lv. 1-3, or some crystals?
You don't like the pendant option on hair accessories? Then what about sealing it? You can craft a new pendant with a sealed pendant. For more information, talk to any maestro.
"What exactly do you consider junk?" "So you'll give me a treasure chest for this trash? I'm sold." "Here's fishing junk. Where's my chest?" "How about you give me Hero's Treasure Chest, and I give you Lv.3 crafting material or S/R-grade crystals?" "Can you mount a pendant on a hair accessory?" "I actually just want to change hair accessories." "I want to trade in useless ingredients for some fragments." "Can I exchange pedants I'm not using?" "I'll seal the pendant on my hair accessory." "I want to exchange Appearance Stones."