I belong to a group called Swap-bot. In brief a person suggests a swap and other people sign up for it. Then everyone gets allocated a partner and you send them the swap items and someone else sends to you.
Everyone I have told about it looks at me as if I am mad. One of the swaps I signed up for arrived today and it's lovely.
Who wouldn't be pleased to receive a lovely parcel in the post.
button swap waiting to be posted, one's going to Ohio and the other to Pennsylvania USA