Toilet Rolls as we have explored before are great for mental enrichment.
Here is another useful way of using something that otherwise would go in the bin.
1) Save up a load of toilet rolls and a shoe box.
2) Stack the toilet rolls in the shoe box.
3) Sprinkle treats or kibble in each tube.
4) Give it to your pup.
Your pup may need help to begin with. Pull a tube partly out so they can get hold of it easily.
To make it even harder close the shoe box.
You can also combine this with our first enrichment idea of folding the toilet rolls and placing the treats inside adding another layer of difficulty.