I do the same thing with my tunnels! When I do the mass ferret cleaning once a week.....twice daily maintenance cleaning but with 20 to 30 fuzzbutts running around, the deep cleaning for sure has to be atleast weekly.......I always try to rearrange the ferret room, tunnels and special sleep areas.
I also have small kiddie tubs or pools that I fill with water and toys, sand, snow, shredded paper, whatever, for a couple of days every so often for enrichement. These new play things are always a hit.....I also allow the fuzzbutts into the 'forbidden' areas every so often and watch them romp like they have gotten away with something soooo scandalous!
Keep the ideas coming!!!!! And have fun!!!!
Me B)