My ferrets love them but they still destroy their mini Yuletide tree, lol. If you have really smart ferrets I would hang these on the lowest branches and put the tree up high so the ferrets can't grab the real ornaments.
My babies love the stashing ornaments. I have to put them on the floor so they notice them (they are very good about not going after anything on the tree). My smallest baby likes the "egg" the toys and scoot her little self all over the floor! I am so glad I got these for them for Christmas!
I decorated the bottom of the tree with these. It's the first year my ferrets are around the tree and I wasn't sure how they'd react, but this seemed like a great idea just in case. I think they look great as ornaments and fit well with the tree. Luckily the ferrets haven't had too much interest in any ornaments, but it's still reassuring the ones within their reach would be safe. They do love hanging out around the tree and playing in the tree skirt.