Oregon teenager caught in plans to use bombs at his school

It is always amazing how many different types of bombs people can make.  Who knew that you could make an effective bomb from Drano (directions available here and to a simpler design see here)?  All you need is aluminum foil, Drano, and seltzer water.  From Fox News:

An Oregon teenager was arrested Saturday after he allegedly built bombs with the intent of waging a "Columbine-style" attack on his high school, authorities say.  

17-year-old Grant Acord will be charged as an adult with attempted aggravated murder and also faces six counts of manufacturing and possessing a destructive device after investigators found six bombs in a secret compartment in his bedroom, Benton County District Attorney John Haroldson said. . . . 

He said Acord had written plans, a checklist and a specific timeline for the attack. The bombs investigators found included pipe bombs, Molotov cocktails, a Drano bomb and a napalm bomb, Haroldson said. . . .