I need a at home, easy, fun, cheap hobby. Any ideas? ?

My horse is being sold to my cousin because we don't have enough space for him anymore and the only thing I have to do is swimming but because it is the beginning of winter it is too cold. I am going to try to grow a beautiful garden but it takes time so what is something I can do to keep myself amused. I don't like activities like chess or board games but I do enjoy things like some sports but we do not have the biggest yard. I don't want it to be too expensive or too time consuming. Any help would be appreciated; just please don't answer with stupid answers. Thank-you.