It's been a while since I have had one of these myself but while we were at the supermarket getting our 'messages' (shopping/groceries) I was struck with an idea.
Digestive biscuits - or better known as 'digestives' - are a British staple. Roman, not unsurprisingly, loved them. After he'd filled his tummy with a fair amount of food, I decided it would be nice for us to make some iced biscuits. He was impressed by being allowed to share in the icing process but wasn't too keen on iced biscuits and preferred his digestives plain - even with a sweetie on top!