A pixie, tiny creature weighing 1-4 pounds. Presuming the sum total of gear weight is less than 10 pounds. A nice thin platter, or a net of bootlaces, made out of a light substance of the player's choice that is strong enough to carry the pixie. The Prison of Salzacas magic item or equivalent cantrip.
The pixie summons the spirit, stands upon the platter, and commands the spirit to bear the platter. As a conjuration, I believe the spirit ignores altitude in its movement, being able to move in any direction just like the spirit companion of a shaman can. If so, is this a slow, if functional way to levitate around the battlefield?