@zook1shoe. Damn, I was hoping freedom of movement from the travel domain would override immobile for one round a day. That's pretty slow movement at 10' per day, keeping with the minimum stat theme. I guess you'd just have to travel by horse and cart or something instead. Animal friendship/speak with animals could sort out the control problems perhaps? It's not a playable character if it's immobile. But once you get outsider into the mix, it could be a record. Just not a playable record.
Maybe a level in Psion, with Psicrystal Affinity as a feat? Sure, you might not do much, but your crystal does heaps. It's actually better than you in every conceivable way. A wizard's familiar would work too. A raven, so it can talk (it's not limited in the language it knows, it's your choice, not necessarily one you know or can speak). The smaller the size of your character, the better. Your raven may have to drag you everywhere, and that's rather hard for a bird to do. Even if it has to peck you away from whatever is attaching you to the ground initially (big DR to not kill your character) or the ground itself (because you're incorporeal amongst other things), it could just work. Sure, you'd mostly be playing as a crystal or a talking bird, but that's still a completely legitimate roleplaying experience.
If CR17 remotely means character lvl17 in a templated thingo like this, your raven would kick a bit of arse as familiars go (it's levels, not wizard levels that determine the familiar's abilities. Pity psicrystals need actual psion/wilder levels, otherwise it'd be featastic for you with the real HD that crystals get). You could even see through the raven's eyes, it could talk to other ravens, you'd be like the raven king. Well, you'd actually be like some strange, shiny, smelly, colourful, ghostly looking thing that got picked up by a magpie for its nest, but still, completely legitimate roleplaying experience. Think of your raven familiar as your cohort, it's raven army as your followers, and build a bird empire.
Oooh, and Sorcerers begin play knowing spells. And get a familiar too. So you might not be able to cast any spells at the start of your adventuring career, but then you order your raven(s) to steal every godforsaken +charisma item on the planet. Then you win! Kind of.
Totally playable character......