Just wanted to share with you guys a staff I created for a 14th level sorcerer. It took all of his starting cash, basically. It was handed down through his family, originally created by his great-grandmother, a silver dragon.
"The Silver Staff
This staff allows use of the following spells:
Shield (0 charges)
Minor Globe of Invulnerability (1 charge)
Repulsion (1 charge)
Contingency (2 charges)
Energy Immunity (2 charges)
Mind Blank (4 charges)
The Silver Staff also confers a +2 Luck bonus to AC and saves.
In addition, the wielder may add charges to the staff under certain circumstances. The night before, during, or after a full moon, the wielder may perform an hour-long ritual to replenish the staff. For each charge to be added, the ritual requires the expenditure of 30 xp, 300 gp worth of moonstone dust, and a few drops of the wielder's blood, which causes 1 point of temporary Constitution damage. The moonstone dust and blood are mixed into a glass of wine, which the wielder drinks. The wielder must then channel into the staff a number of spell levels equal to the number of charges to be added. Any charges that are not added by the end of the hour are lost. The number of charges in the staff may not exceed 50."
I think a staff of abjuration (that's basically what this is) is a great use for a staff. You don't need them very often, but when you do need them, boy will you be glad to expend the charges.
(Note, this isn't a hijack attempt. Just sharing my take on a useful staff

)
Calypso