Craft Epic Wondrous Item( Epic Level Handbook, p. 52)
[Epic, Item Creation]
You can craft wondrous items of epic power.
You can craft wondrous items that exceed the normal limits for such items (as stated in this book and in the DUNGEON MASTER's Guide). For instance, you could craft a cloak of Charisma with an enhancement bonus greater than +6 or an item that required prerequisite spells higher than 9th level. See Chapter 4: Epic Magic Items for examples of epic wondrous items.