Applause did an excellent line ceramic mugs surpassing the quality of the Sigma mugs. They all look very impressive, with perhaps the human characters being the least interesting of the lot. (On a side note, Applause also produced a similar line of ceramic Star Trek character mugs).
For AOTC, NECA produced many of the products Applause had previously had the rights to. Unfortunately, the product quality of many of NECA's early properties was dismal. (This included items for Star Wars, Nightmare Before Christmas, and Beetlejuice. It appears NECA has improved upon their initial offerings with higher quality products in their Kill Bill, Lord of the Rings, and Pirates of the Carribean lines.)
NECA produced two ceramic mugs: Jango Fett and a Clone Trooper. These paled in comparison to Applause's mugs, but looked almost as good as the Sigma line.
Galerie produced a few ceramic items in 2005, availble at Target, Toys R Us, and possibly other retailers. Though quality and detail was lacking on the smaller items, the price point was good (approx $4). The large cookie jars were extremely well done, and also well priced ($15-$20). I found a mystery CHewbacca goblet listed on eBay. Other items may exist as well.
Cards, Inc. appears to have produced a line of ceramic items in 2005 for the UK market. This included standard-shaped coffee mugs, and at least 2 figural mugs, as well as 3 cookie jars.
Applause Mugs
Bib Fortuna
Boba Fett
C-3PO
Chewbacca
Darth Maul
Darth Vader
Darth Vader (Silver)
Emperor Palpatine
Gamorrean Guard
Han Solo
Jar Jar Binks
Luke Skywalker
Obi-Wan Kenobi
Princess Leia
R2-D2
Stormtrooper
Tusken Raider
NECA Mugs
Jango Fett
Clone Trooper
Galerie Mugs/Containers
Darth Vader
Chewbacca
R2-D2
Chewbacca Goblet
Darth Vader Cookie Jar
C-3PO Cookie Jar
Cards, Inc. Mugs/Cookie Jars (these appear to be UK only items)
Clone Trooper (ROTS) Mug
Darth Vader Mug
various standard shape coffee mugs with ROTS themes
R2-D2 cookie jar
Clone Trooper bust cookie jar
Red Shock Trooper bust cookie jar (limited to 250)
NOTE: There are many, many high end cookie jars produced by a company in the late 1990s that deserve their own thread. Anyone have expertise on these?