Extra spells known for favored soul

[molten_dragon]

What are some ways for a favored spell to get extra spells known. Spells from the cleric list would be preferred, but anything would help.

[Lostbutseeking]

Knowstones from Dragon 333 will let you buy extra spells known off your list.

The feat Extra spell can be used to get any spell up to your highest level known -1 if your DM is reasonable.

Domain icons from Faiths of Eberron act much like runestaves for divine casters letting you trade your slots for spells from a single domain with the limit that your deity must have that domain.

There is also a set of clothing in MIC that will let you trade spots for a specific spell per piece ( including Freedom of Movement and Teleport).

[prufock]

A runestaff from the Magic Item Compendium doesn't exactly give you spells known, but effectively amounts to the same thing. If memory serves they are given as arcane items only, but I'm sure a divine version wouldn't be too big a stretch.