I was doing third conditional with my FCE group this week and it lends itself very well to terrible things which have happened, so I adapted this activity from Lucia Walliams on one stop english and included a bit of FCE-style use of English practice.  You can download the text here – it contains Lucia’s original true or false statements, after which I asked learners what problems Emma had had, such as forgot to set the alarm and a truck splashed her.  They then worked in pairs to create third conditional sentences about her day, e.g. If she hadn’t forgotten to set her alarm, she would have woken up on time, as Lucia suggests in the original plan.