Well, if you wish a mechanical representation that adheres to DFRPG canon as closely as possible:
Sponsored Magic (I've Got People): Ritual (Crafting) [-2]
-This type of "Sponsored Magic" is basically just knowing people who are willing to give or sell you enchanted items. Any mortal with the right acquaintances could potentially use it. The "Sponsor" is basically mortal practitioners and/or supernatural beings one knows, and thier "Sponsor Agenda" is to basically get paid money and the occassional favor (mortal practioners), or trade goods and favors (supernatural beings who have no understanding or desire for money).
The above might make "I've Got People" sound like a bargain compared to other forms of Sponsored Magic which have ancient, potent, and strange powers associated with them and the calculated and long term agendas that comes with them, but relying on more diverse and ordinary (relatively speaking) sources for one's magic has its own complications. For one thing, getting magic from individuals closer to one's level means they potentially have to deal with many of the same problems and concerns (or their analog in the case of supernatural beings) that you do. Individual suppliers can potentially get sick, or killed, or get put in jail, or be forced by circumstances to move away, etc. This wouldn't matter much if one has a regular enchanted item, but if you depended solely on that source for potions or other expendable enchanted items then one is out of luck until the supplier is available again or one can make an arrangment with another supplier. Usually though, most individuals who rely on "I've Got People" Sponsored Magic have a large and diverse group of suppliers. Even in such cases though, one supplier becoming unavailable can be inconvenient, for not all suppliers make every type of expendable item equally well. Most specialize in making one type of magic item particularly well, such as veiling or sense-enhancing items. If that individual supplier suddenly can no longer provide what he specializes in making, then you might either end up having to do without that kind of expendable item or having to obtain such items from less skilled alternatives sources (with such items being 1 point weaker in base strength) until the original supplier is available again or you manage to find and make arrangements with a new specialist (or one of your alternative suppliers eventually gets better). These facts mean that it is in a person's best interest to do what he can to prevent such problems from happening to his suppliers, or helping their suppliers overcome such problems as quickly as possible. Everything is a trade off. People might not be able to push one around the way Powers can do as Sponsors, but on the other hand, Powers don't usually need to be bailed out of trouble the way People might.
Benefits: Because "I've Got People" Sponsored Magic has other individuals doing the actual work, the base strength of any enchanted items obtained by it does not depend on Lore. Neither does the roll one would make to declare one coinicidentally has a specific potion. Instead, one uses Contacts to determine base strength and Resources for declarations. After all, for this type of magic it's not what you know, it's who you know.
The above would let a character have access to four potions or other one-shot items, or they could use their slots to get regular magic items attuned to them. Like all forms of magic, one would have the option of buying Refinements to get more slots.
Obviously, a character with "Ive Got People" Sponsored Magic would not be considered a Pure Mortal mechanically (and thus would not get the bonus 2 Refresh) but you could build a character who was a "mortal" fluff-wise who has regular access to magic items.
