Here's an alcohol lamp I made for about 50 cents. Just bought a jar of baby food, ate it (applesauce I believe, it was pretty good actually), then fashioned this in about 2min. Just make sure the wick stays snug. You don't want a burning wick falling down into a jar of highly flammable liquid.
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I usually only put like 1/4" of alcohol in it for safety. You won't be burning it all that long, unless you are knocking up like 100 jars or something, so you really don't need all that much fuel.
I personally don't bother with micropore tape either. Just some foil over the top while you are cooking or pressure cooking (pc) the jars to keep any water from dripping in.
Also, if you have a blender or a coffee grinder, you can just buy brown rice for like 89 cents for lb bag and grind it yourself. A 1 lb bag usually works out to about 10 jars worth. It's a little cheaper than going to the health food store or where ever and buying brown rice flour (BRF).