Three different ways to blow a up a coke bottle.

1) Dry Ice and water

2) Baking Soda and Lemon Juice

3) My favorite, Gunpowder.

All three are just the plastic of the bottle ripping when enough pressure builds up. They are amazingly loud, but are not that destructive, although you would have to be a fool to get too close to one. 1) and 2) are easy enough to figure out by yourself. 3) needs more explanation.

Needed for 3)

2 liter plastic bottle
Aluminum foil
Long waterproof fuse
Gunpowder, used to reload bullets.

Make a cup of aluminum foil by wrapping it around your little finger. It needs to be about an inch long. Pour in about 3/4 inch of gunpowder. Insert fuse and fold over the top of the foil to make a tight little cylinder with fuse sticking out.

Drill a small hole in the cap and put the fuse through it. Put the gunpowder cylinder and fuse into the bottle and screw on the cap tightly.
Light it and run.

You need to scale up or down to fit a 3 or 1 liter bottle. Neither is as loud as the 2 liter bottle.

Anything damaged by this percussion coke bottle bomb is your own damn fault.