Just for the sake of keeping it interesting, here's some neat info that some of you may not really know.
Rod - casts some sort of magic that always hits the enemy - Spell Base Power = 28, Spell Multiplier = 1, this is better than a Bow+Arrow combo
Staff - heals like the Antidote item, which is totally useless, even when Tellah starts with it
Silver/Mythril Staff - works like the Unicorn Horn item, heals Sleep, Paralyze, Charm, and Berserk, which is relatively useless
Lunar Staff - casts Dispel (spell not available in FF2US), another useless spell
Murasame - casts Protect successfully (spell not available in FF2US)
Masamune - casts Haste/Fast
Dancing Knife - think Rod, but replace the fists the Rod uses with knives, best item to make Rydia a decent attacker for a while,
it is not a Whip replacement though - Spell Power = 40, Spell Multiplier = 8
Poison Axe - casts Venom... WHY??????
Earth Hammer - casts Quake, rids of those slimes/pudding/flan in the Tower of Zot easily
Elven Bow - casts Shell successfully (spell not available in FF2US)