Ring of sustenance
(Dungeon Master's Guide v.3.5, page 233)
Price (Item Level): 2,500 gp (7th)
Body Slot: Ring
Caster Level: 5th
Aura: Faint; (DC 17) conjuration
Activation: —
Weight: —
This ring continually provides its wearer with life-sustaining nourishment. The ring also refreshes the body and mind, so that its wearer needs only sleep 2 hours per day to gain the benefit of 8 hours of sleep. The ring must be worn for a full week before it begins to work. If it is removed, the owner must wear it for another week to reattune it to himself.
Prerequisites: Forge Ring, create food and water.
Cost to Create: 1,000 gp (plus 500 gp for base item), 80 XP, 2 days.