This simple, elegant ceramic dispenser with handy spigot, hasn't changed much in the past hundred years or so. Why mess with perfection? It keeps large amounts of beverages well-insulated and you can slip a glass underneath with ease.
If you're going to be serving frosty beverages to a large group it's a good idea to take a hint from the fast food chains and let your guests do their own pouring. This 2.6 gallon container should keep them quenched for a while & the nice wide lid makes it easy to add ice.