We have the same, bowl of fruit/veg. I think SOW is open to those members who regularly stay to the meetings, least it always seems to be those that stay, that win. If you see what I mean!! Plus you have to have lost 2 weeks on the run, so those who are having their first WI don't automaticaly win it with their potentially big loss.
HTH
Charls x
plus a certificate for being SOW and a fridge magnet