Cheap and would keep the ferrets occupied. Need to think where both end of the pipe go to though.
Ferret fun, What a great idea!
Small Pets DIY... Ferret ball pit made from plastic Easter eggs. I got 144 of them from oriental trading for $10 The eggs are also great for balls to roll around when you put beads or beans in them.
101-ferret-games-homemade-ferret-toys by Ferret-World .com via Slideshare
101 Ferret Games & Homemade Ferret Toys More
Marshall Pet Products Pop-N-Play Ferret Ball Pit Toy at PETCO... But it would be way cooler to make it yourself
Top 10 Ferret Toys | My two ferrets LOVED this octopus! Next to their hammock it was their favorite napping spot //Symmone
DIY crinkle plastic ferret toy
So easy!! Make a cat tent out of a t-shirt and hanger!!