For the Trangia there is also the Trangia Multifuel X2 adapter (Basically the guts from a Primus Omnifuel)

http://www.trangia.se/english/2941.news_from_trangia.html

The adapter would also be useful for use with the Esbit alcohol stove with its Primus Etapower like heat exchanger pots.

http://www.campsaver.com/cookset-w-alcohol-burner