Item Cost Damage Short (0) Medium (-2) Long (-5)
Sceptre* 6gp 1d6 20' 40' 60'
Additionally, if either item is used in a melee attack, they inflict 1d3 damage and will break unless that attack roll is an unmodified 20.
On a personal note, I set the damage at 1d6 for players of newer editions of DnD who miss Cantrips. If you want to include them you can easily reduce the damage of each to 1d4.
*A scepter may only be used by an individual who can cast at least 1st Level Divine spells.
**A wand may only be used by an individual who can cast at least 1st Level Arcane spells.