I have a blog and I'm running a swap for parents/carers and children to participate in. The inspiration behind it is that I had a penpal when I was a young 'un and that kind of thing is so much rarer now thanks to the internet.
Participants will be matched up as closely as possible with children of a similar age, anyone is welcome to join in and there would be five weeks until posting dates.
If you're interested, the questionnaire and my email address are available on this post