I have a five-years-old cat, Hani, and I love him. I buy cat foods, litters and toys for him, but feel like I don\’t have time to play with Hani thinking that I\’m too busy. As my cat grows up and become a full-senior cat now, I find him less energetic than before, more sadly he also gets both mental and physical illness. With my thesis project, Hanimustäv, I pick up the technology available around me to build a toy for my cat, Hani, to have more time playing with him, and am hoping this could improve his health.