I've always wanted a smelt smelter. Mmmm, molten smelt!
Here's what I use: http://www.epinions.com/pr-Camping_Stoves-Luhr-Jensen_Lil_Chief_Top_Load_Smoker
It's black as pitch after 25 years, but it still does the job. There are better ones out there today, but they'll all do right by the humble smelt. I like to eat them head first and look into the sunken golden eyes as they head for my gullet. Beer helps.
Literally LOL here...