Last "bad idea" of a season

All the seasons' official final "bad idea" are listed below. Each category's experiment items are listed in the order of when they were microwaved, starting with the earliest experiment onward

Season 1

 * Rice Krispies (Unnamed)

Season 2

 * Dynamite (Diane)

Season 3

 * NiCd batteries (Helga)

Season 4

 * Golf ball (Lacey)

Season 5

 * CO2 canister (Whoopi)

Season 6

 * PlayStation Portable (Samantha)

Season 7

 * Spinning firework (Gladys)

Season 8

 * Gold/bronze filings/ball bearings (St. Margaret II)

Season 9

 * Bottle of beer (Penelope)

Season 10

 * Firework mortar (Heather)