Help: Boosting caster level

[ConfusedPeon]

Anyone have of a list of ways to boost a wizard's caster level? I'm building a wizard (utility caster/backup blaster) for a mythic campaign and am looking for different ways to raise the CL of my (elemental) spells.

Thanks, and cheers!

[Tsaruk the Slayer]

The only things I can think of are the orange something ion stone, and the feat mage's tattoo (which requires spell focus).

-Tsaruk