Originally Posted by Drip

Extra hint: do NOT use the equipment seeds you currently get from the gacha, but save them up (and save up a lot of goldpieces!) until you have that set of event jewelry complete. Once you have that, equip it to your favourite girl with 4 inventory slots (so you won't accidentally sell it) and start using the equipment seeds. Use the pieces of jewelry below +10 to level up the event jewelry, equip the +10 pieces to your other girls.

I'm just too gawddam lazy to use mine.