Not sure if the link in the OP is still current, but making sugar wash and distilling it is pretty easy:

A low budget alternative is simply collecting discarded vodka and schnapps bottles, which will yield a half litre or more in a few months if you're diligent. With luck, you can find nearly full bottles that have been lost or discarded! It's still best to distill this stuff to get rid of possible saliva remnants…

Here's a couple more quotes that seem pertinent to repeat, since they answer some likely questions that would come up for those who may not have read the whole thread.