I figured I'd offer them here, since this is where potential takers are likely to be.
I have a navy blue M&S Thomas & friends dressing gown, age 5/6. Only worn occasionally, so in good condition.
A bright blue grobag with cars and trucks on, age 3-6 years. Washed a lot and slightly worn, but still serviceable. It's one of the warmer front fastening ones, used by the DS2 who wouldn't even contemplate a blanket or duvet, until recently. This one is in the same fabric.
I just need the cost of postage for them (which is why I'm doing it now, since it gets really expensive in a month) - they're going to a charity shop if no one wants them.