Let’s keep building on the them of the Eldritch Knight. How about some weapon based spells for above 0-level?
Casting Time: 1 bonus action
Components: V, S, M (a weapon)
Duration: Concentration, up to 1 minute
When you touch a weapon while casting this spell, you imbue it with a piece of your will. This weapon can float five feet high, move, and make attacks for you while you concentrate on the spell. Each turn as a bonus action or action, you can command the weapon to make one attack for you using your melee spell casting attack bonus. The weapons damage type is the same are the weapon’s normal damage. When you move, you can mentally command the weapon to move up to 30 feet as well.
When the spell ends, the weapon flies back to your hand. If your hands are full, then it falls at your feet.