I'm aware that you can't brew a potion from any spell with range:personal, target:you, since it is restricted to:
any 3rd-level or lower spell that you know and that targets one or more creatures
However, staves and wands do not have this restriction.
To activate a wand, a character must hold it in hand (or whatever passes for a hand, for nonhumanoid creatures) and point it in the general direction of the target or area.
So, what if you point your wand of true strike at somebody else? Does the spell then effect them?