Buy one or two packets of chocolate coated finger biscuits, a 50g bar of chocolate and a packet of M&Ms or smarties.
Melt the chocolate in a small bowl with a few short bursts in the microwave.
With a teaspoon put a splodge of melted chocolate on the topside at the end of one of the finger biscuits. Place it down on a tray and arrange 3 sweets in the form of traffic lights - you can use the usual pattern of red, orange, green or any other combination that you fancy.
Allow chocolate to harden before moving.