Item drawing order and item IDs:

[(BASE, -), (BOOTS, 64), (PANTS, 1), (SHIRT, 512), (MISC1, 16), (MISC2, 128), (HAIR, -), (HAT, 256), (CAPE, 8), (GLOVES, 4), (WEAPON, 2), (SHIELD, 32)]

I propose using MISC1 as an `amulet' slot and MISC2 as a ring slot. (MISC2 is currently used by the wedding ring.)