My daughter bugged me one day to buy a toy for her guinea pig. We didn’t have a lot of money so I looked around the house for something to make. I saw the rolled oats container in the cupboard and got an idea. I put the oats in a large baggie and then I cut a hole in the bottom of the container. I left the lid off and had her put it in her cage. She loved it. She went through her little “tunnel” over and over. It made her happy and it made my daughter happy.