This perforated golden vessel resembles any thurible found in places of worship. 

If filled with incense and lit, a command word need only be spoken to summon forth a 12 hit dice-sized air elemental which will appear on the following round. 

If incense of meditation is burned within this ½-ft wide, 1-ft high vessel, the air elemental will have +3 on each of its hit dice, and it will willingly obey the commands of its summoner. 

Note that if the censer is extinguished, the elemental will remain and turn on the summoner. (Cf. Elemental in MONSTER MANUAL.)