For Marlowe:

Shard of the Fractured Mind
Slot: Headband
Aura: Strong Telepathy Price: 36,000gp
Originally created in order to help someone suffering from schizophrenia, the Shard of the Fractured Mind can be used to bring out latent personalities in someone's own psyche, utilizing them for short periods of time.
Three times per day, the wearer of the Shard of the Fractured Mind can call upon its power to cause an aspect of their own personality to splinter off into its own temporary consciousness. Treat this as using the schism power with a duration of 10 rounds, except that the second psyche posesses a random Psicrystal personality. Any actions which run counter to that fragment cause the user to make a DC 18 Will save or become Confused for two rounds as the conflicting drives fight for dominance.

CONSTRUCTION
Requirements: Craft Wondrous Item, schism Cost:18,000gp