Some of you may be thinking, arena lightsabers? What is he talking about? What I am talking about are the two lightsabers used by Anakin Skywalker and Obi-Wan Kenobi when they are rescued from the arena on Geonosis by the Jedi Order. Once the Jedi take stage, Anakin and Obi-Wan are each thrown a lightsaber to use in the battle. These sabers are also used in the duel with Count Dooku. For the record, it's the Ki Adi Mundi version that Dooku slices. On first glances these seem to be just generic copies of the Adi Gallia and Ki Adi Mundi lightsabers, however further examination proves these two sabers in fact have a fair amount of differences in them. Therefore, they're being included here.
The Obi-Wan/Adi Gallia Arena Saber
Obi-Wan used a saber designed after the Adi Gallia version used in Episodes 1 and 2. You can see the differences illustrated in the drawings below.
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The Anakin/Ki Adi Mundi Arena Saber
Anakin used a saber designed after the Ki Adi Mundi version used in Episodes 1 and 2. You can see the differences illustrated in the drawings below.
Click the image above for a larger version