Plants

Many are very dangerous (or fatal) to your ferret - if you have a Green Thumb, keep the plants on a high table (that can't be climbed) or hang them. In addition to the danger, you can't imagine how far the dirt in a planter can be thrown while your ferret is digging up your favorite plant. (Mistletoe berries can be fatal; Rhubarb leaf blades can be fatal in small quantities; Philodendron is very dangerous; dumb cane is very dangerous and can be fatal - just to mention a few).