untitled every day happenings: I built a What?

Entry 3
Smoke bomb

   this is a typical homade smokebomb here is the video

Entry 2
  hydrogen gun

  This is a really awesome project that should NOT be tried indoors. Yes, it takes some time, but the results are epic. I myself fired at least 4 shots.
  What you need:
   HCl compound
   beaker connected to a plastic tube

   big bucket of H2O
   any type of metal (preferably magnesium)
   cork with hole
   sparker with long handle
   small plastic bottle

   Step 1 pour 100ml of HCl into beaker
   Step 2 drop some Mg into HCl, you should be able to see the H bubbles
   Step 3 fill the plastic bottle w/ water, hold it upside down in the water bucket
   step 4 fill bottle with H

Step 5 slide cork onto sparker

Step 6 insert Hydrogen filled bottle into sparker, the cork should stop air from escaping bottle

Step 7 fire in the hole!!!!!!!!!!!!!!!!!!!!!!!!

Result : My bottle broke

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Entry 1
  hand held LED candle

  this is a really really simple DIY little thing if you happen to just be very very bored. Took me less than 3 min to finish, but the effect is really cool, and it is pretty fun, in some ways.
What you need:
   9V battery