Druids can't cast tongues. It's a Sor/Wiz Brd Clr spell. Rary's telepathic bond is a Sor/Wiz only spell.
Ventriloquism won't work because it states "any sound that you can make normally", and clearly you can't make speec normally, while wildshaped.
Yes, I could create a companion speak with people spell, but that requires a fairly lengthy research session, and on and on, and I have to get the GM's approval, and convince him as to why it would be a good spell. (Yes, I realize that Gms must approve anythign in the game world, let's please not go there).
It seems hard to believe this sort of thing can be left out. Surely one of the playtesters ran across this. Surely someone years ago thought of this. Surely there should be a spell for it by now.