Based on your financial expertise, provide your response or viewpoint on the given financial question or topic. The response format is open.

What should I do with the change in my change-jar?
I don't know if those machines work this way in the UK too, but here in the US you can often avoid the coin-counting fee if you opt to convert the money into a gift certificate instead of cash.  I routinely convert my coins to Amazon gift certificate money with no charge.  Individual machines differ in which particular gift cards they use, but at the least, almost all of them offer the option for a no-fee conversion to a voucher/gift certificate to the store where the machine is.  So it's likely you'd be able to use the machine to convert the cash to "money" you can use to buy groceries.