We all know that a low level Magic-user, is a bit of a one hit wonder. Levels 1 & 2 are particularly tough. Usually packing a Sleep spell, he unleashes his one mighty spell & is spent for the day. LOL.
Ive seen in Dragon Age RPG, the Wizards have something called an Arcane Lance. I aws thinking that the Magic-user could have something like that. A limited Magic Missile. The stats, damage, range of a mundane missile weapon. Perhaps a dart, sling, thrown dagger. Just unlimited ammo. A weapon always at hand.
Another is cantrips or minor spells. In the pouring rain- the Mage stays magically dry. In the jungle & swamp- those annoying insects are repelled. A Wizard lighting a nearby candle with the sweep of his hand. A small ghostly image of the hunted dragon appearing in the Wizards hand. etc,etc. Minor things really. Things you read Wizards easily doing in fantasy books, but not used much in games. JUst makes the Magic-user seem more "magical" !
Another idea is the Wizards staff or wand. Perhaps the energy for one more spell is stored. Maybe it boosts the Wizards casting level up by 1. The end of the staff glows like a torch on command. If lost or >Gasp!< broken, a severe penalty.
What about Familiars? Spies, companions, guards. See through its eyes, hear through its ears.etc,etc.