I would like to see some magic in this, nothing world shattering like hurling lightning bolts or summoning hordes of undead to attack the local pigfarmer. But something subtle and hidden. Maybe spells that are illusionary and are more akin to tricks and sleight of hand that a few good street performers could replicate.

On the other end of this there has to be the medicinial herbology and poultices etc, would they not in there own way be low forms of magic. Before Science was named thus, this was how a lot of people made do with nettle teas and things like that. 

Or there could be another option in terms of enchanted items, magic has been lost from the world but still exists in a few (very rare) artifacts of the gods (god). These could be holy items or weapons and armour. Just a suggestion.

Hope this is in some way helpful