When I ran a playgroup many moons ago, we suggested the mother left something of theirs with the child so that the child could look after it for Mummy until she came back to get them. The child would usually carry the item around with them for about 5mins and then it would get forgotten but if they then got a bit anxious they could go back to looking after it for Mummy. It usually worked and the child felt quite grown up to be in charge of something of Mummy's!
How much do you spend on yourself?
Tales about "stingy" guests and hosts.