This answer brings up the terrifying idea of Persistent Time Stop. Upon reading this, my first thought was to cast it as a Wizard, rest fully, prepare all of my spells (including Persistent Time Stop) again, and then cast it again for an infinite loop. Is this possible by RAW? I'm unsure if the "apparent time" mentioned in the spell text would be enough to allow the user to prepare spells.
Yes, that's possible
A caster that casts the 9th-level Sor/Wiz spell time stop [trans] (Player's Handbook 294) modified with the metamagic feat Persistent Spell (Complete Arcane 81) can rest then prepare spells while in the spell's "apparent time." That is, while under the spell's effect the caster can't interact meaningfully with other creatures or objects they attend, the caster can still do pretty much anything else, including, presumably, resting and preparing spells normally.
Thus, for the small price of what is, effectively, a 15th-level spell and a few feats, a caster can have free reign of the multiverse—absent any creatures and their attended objects, of course. That caster will likely enjoy limitless wealth and power until his death by fiery, freezing, or fuming misadventure; old age; or another powerful creature in an area of antimagic. (And given the caster's likely power, that death may take awhile.)
Note: The quaruts from the Fiend Folio (102) are the inevitables that try to handle problems like this. I mean, I don't know what they'd do about it, exactly, but it is their job.
By very strict RAW, yes. Time stop has a duration, so can be made persistent. Eight hours passing for you is enough to refresh spells. If you have a way to apply Persistent to a 9th level spell at least once per day, you can, in a GM-less environment where only exact RAW applies, obliterate everything and everyone to your heart's content, or at least until whatever computer is running your game finishes searching the Monster Manuals for an Outsider or something that enforces time and can enter your time stop to stop you.