Gifts: Every time you recieve a gift you should give a return gift at approximately 30% of the value of the first gift. Of course, this system leads to an infinite sequence of gifts of decreasing worth. Case in point: when we moved in we gave our neighbour a box of sweets, she countered with a bag of oranges, we gave back a smaller box of sweets, the bowing had hardly finished befoe she had summoned her mother who came rushing with half a watermelon. I now have to give her an apple, I anticipate a plum in return, then I'll give just one small sweet, perhaps a fruit pastel and she can give me a cherry etc.

Also, every time we pay the rent we get a hand towel. We have eight hand towels from the landlord now. I'm not getting sucked into this one: I give a handkerchief, they give a tissue etc.