Ive made some home made goodies. Got to your local hobby shop and pick up some size D-0 i think rocket engines. (the ones with no delay to pop the chute, used for 2 or 3 stage rockets) and glue that into the bottom of a tube (I just buy the tubes at the hobby shop since they work perfectly) Then put in your biggest explosive (half stick, m-80, silver salute, etc.), cut off the wick to barely anything (enough to get lit though) and put it directly ontop of the engine to catch the backblast. Then glue on a nose cone and some fins to guide it. HOLY CRAP. Ive got a buddy that lives 2 towns over (maybe 10 miles away) and i told him to go outside and listen on the phone. IT was SO LOUD at my house, and after like 10 seconds he said he finally heard it and it was very "boomy" When you get it up there, its loud for a long distance. When I went to my aunt's house 2 years ago, my uncle did the same thing, except he used an F engine (you have to be someone special to buy those i think) and he made a bomb out of a paper towel tube, smokeless black powder my dad uses to reload ammunition, hot glue, duct tape, and cardboard. He loaded that directly in the top, leaving a hole instead of putting a wick in, and put all the fins, nose cones etc. on and he even painted it red. It looked like one of those rockets from that road runner cartoon. He launched it and it set off car alarms for like 3 miles. I swear its the loudest thing Ive ever heard. It had to be up about a few thousand feet when it went off too. I didnt think it would be that loud that high, but it was.