Fake Bomb

This is a fake bomb made from the cardboard tube from a roller blind.

What you need is, cardboard roller blind tube, wire,insulating tape. cooking timer. paint or dye. end caps.

Cut the tube into 4 equal lengths, I used Magenta ink from a refill kit to paint them.
Cut the wire into 4 , fit them to the end caps.
Strap the sticks of TNT together with tape.
Stick the timer over the end of the wires.