drinking through straws. A variation is the flaming volcano bowl, which has a raised crater reservoir. This reservoir is typically filled with a small amount of overproof rum (151 or 160) and carefully lit on fire. Large shells or their ceramic counterparts are also sometimes used for communal drinks, such as in the Chin Tiki Special. The Mr. Bali Hai mug comes with a lid that has two holes in it for multiple straws and sharing. Manufacturers Though hobbyists and ceramic artists, in a small capacity, have continued to make these mugs at home, larger manufacturers have mass-produced restaurant and bar promotional souvenirs. The two largest mass producers were Orchids of Hawaii and the Otagriri Mercantile Company (OMC). Other smaller manufacturers included Daga and Westwood, with most made in either Japan or Taiwan. While some were marked with manufacturers' stickers or etched with mold numbers, many were blank and were designs stolen from competitors. Some vintage knock-off mugs were of poor quality, while others were as crisp as the originals. There is speculation that in some cases the same manufacturer may have sold the same mug under two different company names. The "tiki revival" of the 1990s and then 2008 onwards saw both the new production of historical styled mugs as well as variations that would have in the past seemed potentially out of place in traditional tiki bars due to advancements in glazing and other ceramic technologies. Custom tiki mugs started to be made as an advertising tool for use outside of establishments that would be considered strictly as tiki bars. Examples included a mug for the solely online podcast Tiki Bar TV, as well as a complete set of Star Wars-themed tiki mugs. 21st-century variations While the main Polynesian and nautical themes for traditional tiki mugs still remain, newer tiki mugs continue to stray much further from the standard formula that was used by Orchids of Hawaii and OMC. Mugs depicting actual people or characters such as Don Ho, Jeff "Beachbum" Berry, Margaret Thatcher, Sven Kirsten, Donn the Beachcomber, and Magnum P.I. started to be produced. Tiki's historical basis with drinks such as the Zombie and Corpse Reviver, along with the use of early skull-shaped and shrunken-head mugs, became a catalyst for more overt "monster"-themed mugs. In a similar fashion, Tiki's link to Atomic cocktails and drinks such as the Test Pilot, Astronaut and Space Needle eventually led