An evening of fun and explosions with household chemicals

Part 1: Bottles flying into the air
Key characters: Bryan, Nick, Justin
Bystanders: Jen, Scott
Ingredients: A, B, C
Supplies: Empty 2L soda bottle, long dowel, matches or grill lighter (better)

This idea had been discussed between the above people earlier in the evening, deciding what to make blow up or similar. (Last night, apparently, they exploded 2L soda bottles with water and dry ice, but I missed that.) Bryan suggested bottle rockets (literally), and procured the ingredients.

Procedure: Plant stick in ground, pointing near vertical, away from houses/people. Pour a few oz. of A into bottle, add a few cc of B, swirl. Mixture will begin to bubble; when it's almost filled the bottle, cap it and shake a bit; uncap and pour out into spare container (later, dispose of in drain)--bottle is now largely full of oxidizer. Pour in a bit of C, shake, pour out--bottle now contains fuel and oxidizer. Quickly invert bottle over stick, and hold a lit match or grill lighter near the mouth. Foom! Bottle goes flying off. We did this successfully twice with a 2L; third time (Justin lit it), it foofed off, went about 10 feet, and the bottle had melted too much to use again. Then we tried a smaller bottle with similar results, and ran out of A.

Part 2: Exploding crystals
( Longish story and procedure herein )

If you're over 18, good with chemical safety, and are really curious about the ingredient list, contact me--I don't want to post it publicly, even though these recipes are readily available on the web. ;)

Hehe.. POW!

Made some more crystals as described earlier.. had a bunch of solid scooped into an olive oil bottle cap, and left the cap on its side, facing the sun, in a concrete groove on the patio ledge, perhaps 20 or 30 minutes ago.
I just heard a really loud bang echoing off the buildings outside, and on a hunch, went to check on it. It had in fact detonated, deforming the cap and throwing it back a few feet.. I was impressed, as will Bryan and Justin when they return home. :)

Logic escapes some people.

There's a user in several photography communities who's been posting the same pictures to all of the communities lately. This annoys people, because they want to see different stuff in each community, and etiquette and historical action dictates that people posting pictures to multiple communities choose different pix for each community--enough people are members of multiple for this to make sense.

This user just doesn't get it.
"well if im annoting ppl in a lot of communities maybe they should leave a lot that way they only see it once or twice instead of all the picture communities im in.. makes sense to me..."

This is the same user who doesn't see why saying "buy me stuff from my wishlist if you want to, it's my birthday and maybe you want to randomly buy me stuff, oh and here's a picture" is a bad thing in photography communities.