Magic staffs. I'm ambivalent

[Kraken]

If Dragon is on the table, Dragon 338 has the recharge staff feat, though it might be too late for you to look into getting it. First, a wizard needs to give up their familiar at first level in exchange for an ACF that gets them a staff. Then you need to take craft staff to enchant said staff with spells (craft staff is also a pre req for recharge staff). Then, once you finally get the recharge staff feat, it allows you to expend unused spell slots for the day to recharge your staff, at a rate of one charge per five spell levels. Yes, that means if a staff has a level 6-9 spell in it that costs 1 charge, you can expend a 5th level spell to get a charge back to cast that spell. Also great if you make your staff have spells with expensive material components that you want to spam regularly. Edit: the enchant staff feat is also worth mentioning. Requires the imbued staff ACF as recharge staff does, but when you take enchant staff you choose a spell one level lower than the highest level you can cast (yes, earth spell and similar shenanigans are applicable here). You may cast that spell as an SLA once a day as a standard action, and it functions as if you had cast it yourself. So at the cost of a feat and 100*spell level GP in a ritual, pick a spell that has a casting time of longer than a standard action, expensive material component or focus, and/or a high exp cost. You can now use it once a day for free as a standard action. The feat can be taken multiple times to add a selection of different spells, but it can't be applied to the same spell more than once for multiple uses of the same spell in a day.