Enrichment at school

On Thursday and Friday of this week I am "leading" an enrichment activity at the school where I work.
Enrichment is when the pupils and teachers are off timetable, the teachers/staff offer activities and the pupils choose to take part.
On Thursday and Friday of this week I am "leading" an activity, I seriously hope it goes well, and if it does, I really don't mind turning it into a once a month after-school activity for the pupils.
More on Friday evening.
Apparently several of the pupils are looking forward to the activity.