you have to be careful when hiding things on ceiling fans not to turn the fan on. In my family at passover the children hide the matzah, and then the adults...um..don't actually look for it, but bribe us to bring it back (I hear in other families the adults hide the matzah and the kids have to find it) but to get to my point, one year we hid it on top of the ceiling fan. Then someone turned the fan on. Well the adults were reluctant to pay us for bits of matzah that had been strewn all over the room and did not resemble the peice we were supposed to have. I suppose a weenie on a fan probably wouldn't crumble to bits like matzah, but it would go flying around the room. Interestingly, they ate the bits of matzah off the ceiling fan, but the year we hid it in the toilet tank in a ziploc bag (that's where the CLEAN water is) they wouldn't eat it.