Alright, I would like to call your attention to a couple of loverly character options:
1. Wand Modulation, a low-level spell from Complete Scoundrel that allows you to replace a spell on a wand with a spell up to one level lower than the spell; you must cast the spell onto the wand.
Benefits: You can stick ANYTHING that counts as a spell onto the wand. Yes, this does include infusions and mysteries, as well as Arcane/Divine spells.
Drawbacks: The spell is at the minimum caster level for a spell of that level, the spell only lasts for 1 minute/level, the spell cannot have an expensive material or experience component, and the spell consumes 2 charges per use.
2. Metamagic Item, that crazy broken infusion from [can't remember where].
Benefits: You can apply any metamagic to a wand. I can't remember completely, but I thin it is safe to say this only works with metamagic you personally have.
Drawbacks: Only lasts 1 round/level, and you can't normally have an item of it.
3. Wand Bonding, a feat from City of Stormreach, page 117 iirc.
Benefits: You can cast any spell that is in a wand using your own spell-slots; the spell receives a CL bonus equal to 1/5 your CL.
Drawbacks: You have to be a Warforged.
So, what are we to do?
1. Take Wand Bonding. If you are a Warforged Sorcerer, you can replace your familiar with this feat.
2. Buy a wand of Wand Modulation.
3. Have a friendly Artificer use Metamagic Item on the wand to add Persistant Spell to your Wand Modulation.
4. Use Wand Modulation, and have an eligible spell cast into the item.
5. For the next day, you can cast that spell out of your own slots.
6.
7. Profit!
Fun fact: Thanks to the fact that the Wand Modulation spell just grabs a spell, you can throw on some neat little infusions or mysteries, and cast them as a sorcerer.
A nice little trick, am I right?