I don't have wrapping paper around my house ever. Whenever I have to wrap something I use left over tissue paper, newspaper, coloring book pages or paper bags from grocery shopping. I often forget my reusable bags (oops!) but I find other uses for our paper bags.
Henri's birthday was last weekend. I got him the perfect gift but no wrapping paper or even tape. I used my leftover paper bags and all I could find was blue painter's tape. When I taped up one side I realized it looked silly, so I made blue strips all over the box. Since I was alone and would have to carry Ellie, the diaper bag, the present and any other random thing I have to grab on the way out. I left the handles on the bag to make it easier on myself.