Allow me to poke my head in here, and express interest in addition to a plan.
first of all you are all familar with the fact that during WW 2 the army reuqested that all fat, or grease be turned in to make glcyerin by extracting it from the fat/grease to make bombs. Now there are other componets which are required in making a effective "stable" bomb. Namely nitrates. Now nitrates are a common component in your modern day fertilizer, and can be safely extracted with a small bunsen burner, and a small dust mask that can be picked up at any construction site, as for detonating it we can take the alarm mechanism in a modern alarm clock to create a timer, or if we are really lazy a small bit of twine will serve as a readily lightable fuse. all of these things are readily aviable, and not likely to be taken in the case of a zombuie apoc. People don't value the bacon grease, or french fry fat that is left at a Fast food resutrant, and I highly doubt that the local Lowes will have been ran sacked for anything but its wood, and fencing materials. This allows us to have bombs that can redily take out a city block without great risk in raiding a millitary compound.
so, yeah.
I have plans.