Rod

Forgotten Realms Wiki: https://forgottenrealms.fandom.com/wiki/Rod
Rods were scepter-like objects that could be used by spellcasters to focus their spells.  Some magical rods had unique magical powers.

The primary use of rods is to channel the spellcasting powers of arcane spellcasters such as artificers, bards, sorcerers, warlocks or wizards, aiding them when casting their spells. By doing so, someone using a rod as a spellcasting focus could eschew most of the more ordinary material components required for a spell

History

Some spellcasters carried rods in sheaths on their hips

Item type
Magical
Subtype / Model
Rarity
Varies, depending upon enchantment

Dimensions
Typical rods were usually 2–3 ft (61–91 cm) long cylinders made of metal, wood, or bone