For example, I saved a bunch of these small cardboard sheets that were separating the rows of cans in a box of cat food.

Add some glue and you have a little tent for your cat.

For example, I saved a bunch of these small cardboard sheets that were separating the rows of cans in a box of cat food.

Add some glue and you have a little tent for your cat.

Plus, reusing something is the second step in Reduce > Reuse > Recycle.