I went to the pet shop today and found a great little log for my cat fish to hide in. It did make me wonder if it could be used for a Hamster or other rodent.
I have used pottery tank ornaments what small rodents would like, I'd need to clean them of course.
Here's the log I got for the pleci:
Large Log | Pets At Home
The others that would be used tank ornaments are like these:
Orb Coral Ornament | Pets At Home
Coral Orb Ornament Small | Pets At Home