We dont have prizes, at all. And I have never seen a slimmer of the month award given out. For SOTW we get a certificate and a sticker.
I think SOTM should be something a bit more special. Maybe everyone could put a little bit of money in a tin each week and then a voucher for somewhere could be bought with the proceeds? I know most supermarkets do the Amazon/Itunes/Department Store Vouchers these days, so they might be worth considering. If I won a teddy I would cry, my kids have so many stuffed toys already that if my house were to burst there would be a tsunami of soft toys that took out half the houses in the area.