It seems to be an obsession of many directors to include self-destruction of the ultimate warrior or evil dictator in their movies.  Self destruction seems to be an art of beauty to end enemies and self-destructor lives together.

Self Destruction Keychain will generate beeping sound when you press the destruction button.  The 2.7 x 3.4 x 4.1 cm key chain will not explode, but it can definitely tension you up with clear sounds of the countdown.  The key chain is £6.99 and you can purchase it from Gadgetshop.