I hate to burst the bubble for all the silly or uneducated people out ther (noobs thats you). but such an item does not exist, unless of course your house is a chemical storeroom. If you are a making anything that can be truly classified as an explosive then there will most definitely be shopping around e.g. hardware, paint, garden stores and online ordering e.g. ebay. You also need equipment and tools such as thermometers, overalls, gloves, masks/goggles, tongs, reliable scales, the list could go forever. And finnaly you have to undertake a synthesis which requires intelligence, skill, good understanding of the particular recipie and some small scale testing all to ensure you dont kill youself.
so before you post another stupid question on how to make a bomb, do your research, look at the stickies and use some common fucking sense - If a bomb could be made with household items those items would be restricted/banned quicksmart.
also dont use a legitimate scientific hobby to commit serious crimes you'll just succeed in perpetuating a negative stereotype and get equipment, chemicals and resources banned for everyone.

well said, if only more peolpe would read this thread.

i recomend this to be added to the 'sticky' section

Nail polish remover, hair bleach, pool acid and a match.

Oops, I just made an explosive out of household ingredients.

You meant well, so I'm not going to ban you - However, next time, leave the sweeping proclamations to the experts.