I'm so-so at sewing, but it hit me today that there are some cute "darkness boxes which those who are good at sewing could make to sell for helping fund pet care, shelters, etc. We used to have a bread keeper a cousin made: a basket with the top being a chicken done in cloth and you would reach in for your piece of bread. What about boxes with bedding in them and the boxes could have covers which are animals and a slit opening with a secondary flap to close out more light. Can't you just imagine having a little moose sitting around, or a Rudolf, or a bug, or... with all of them actually being pretty sleeping box/darkness box covers for the ferrets? Brewer's Yeast shouldn't hurt unless the ferret has insulinoma. The chromium levels can decrease the blood sugar levels so it is to be avoided with insulinoma, though it can be useful with the opposite problem: diabetes. [Posted in FML issue 4321]