The skates are interesting but flawed. First up, Magical Skating has no clear effect. How much does it add to Athletics? Does it negate terrain problems? Also, non-re-movability kinda seems to defeat the purpose of an Item of Power.
Marci's Roller Skates [-1]
Description: A pair of pink and white rollerskates created as a gift to a powerful wizard's spoiled neice.
[-0] Purpose: To punish the person who wear's the skates.
[-0] It is what it is: A set of magical roller skates
[-0] Unbreakable. As an item of power, this item cannot be broken except with a magical ritual that opposes its nature.
[+2] Removing Skates: Before the skates can be taken off they first must be soaked for 2 hours in public fountain that is consecrated with a coin from the year and country the skates were made, 1972 America, and they need to be dried off with werebear fur.
[+1] One-Time Discount. A set of roller skates
[-2] Magical Skating: The rollerskates add +3 to athletics rolls when used to determine number of zones moved, and +2 on difficult terrain.
[-2] Skate Pro: The wearer recieves +3 to any performance check regarding advanced techniques, or tricks on roller skates.
One-shot items are never Items Of Power.
The box is designed to work everytime it is opened, not just the first time.
The Eye Of God is okay-ish, but I dislike it. First of all, True Seeing really ought to be written up as a full custom power. And what I said here still applies. Secondly, Godly Insight provides a huge bonus. Just because you can get +2 for 1 refresh doesn't mean you can get +6 for 3 refresh. And thirdly, Godly Insight is a social power. I prefer to avoid those for genre reasons.
The Eye of God [-4]
Description: An eye that when surgically implanted, can give true sight, seeing through all veils, and lies.
Musts: You must have an aspect related to your possession of this item.
[-0] Purpose: To see things for what they really are.
[-0] It is what it is: An eyeball that looks vaguely human.
[-0] Unbreakable. As an item of power, this item cannot be broken except with a magical ritual that opposes its nature.
[+1] One-Time Discount. An eye is easily concealed. Just keep it closed.
[-4] True Seeing: The owner receives a +5 bonus to perceive veils, shapeshifts, and glamours.
[-1] Added Insight: Gives a +2 bonus to empathy when trying to discern the truth.