Isn't automated technology amazing. Amazon's fancy algorithm, that surfaces things people normally buy together, has worked out people love to make their own bombs. Search for aluminium powder and you might like iron oxide and magnesium ribbon to go with it -- perfect for making thermite.
Helpful Amazon as always; I just hadn't realised how easy it was to buy this kind of thing. Not only is aluminium powder normally bought with fuses, worryingly so is potassium nitrate. A quick search brings up all sorts of recipes online too. But don't get any bright ideas, OK, thermite is definitely NOT something you want to be messing around with in your back yard. [iO9]