You are looking for a 200ml Sistema container, with a pen and log inside. This should be an easy find but finding the right time to retrieve it might be a bit more difficult.
Joey Scouts meet between 5.45 - 6.45pm on Tuesday
Cub Scouts meet betwwen 7.00 - 8.30pm on Tuesday
Scouts meet between 7.00 - 9.00pm on Wednesday
I suggest you avoid these times, as the Hall gets very busy.
Please replace the cache back where you found it (hopfully out of sight of Mugglers and their dogs.)