Eye of Akasha
From Tardis Wiki, the free Doctor Who reference
Eye of Akasha were small, red, spherical objects the size of cricket balls. They would give off light and tertiary radiation.
- The true purpose of the Eye of Akasha is unknown.
In one of the earlier regeneration of a the Doctor, he kept a broken Eye of Akasha in his house on Allen Road. At some point after the 1980s, a squadron of Judoon came to get the Eye. He was able to swap it with a cricket ball and let the Judoon leave with it. (IDW: The Forgotten)