A decent sporran can be made without a lot of special tools. All you really need is an Xacto knife to cut the leather, something sharp and pointy to poke your stitching holes, and two glover's needles. Other tools would make the job easier, but you could get by with just those. Material for the sporran could be as simple as a couple of square feet of leather and some waxed thread. You can cut your own strips of leather for the braiding/lacing/fringe/tassels/whatever.