To create a treasure, I would take.

If I were summoned to create a treasure I would take: the horcruxes Rowena Ravenclaw’s diadem

(her crown), Tom Riddle’s diary, Marvolo Gaunt’s Ring, Salazar Slytherin’s locket, Helga Hufflepuff’s cup, Harry Potter (yes, he was a horcruxes) and Nagini the snake. I would also take Hermione, Harry, Luna, Ginny and Albus Dumbledore’s wands, Indiana Massara’s voice, a phoenix feather, Wanda Maximoff’s heart, frozen fire, area 51. These are the things I would take to treasure.