Made a small strop from scraps laying around to keep on my bench.
~scrap of 1x2
~old leather 1½" wide belt
Glue a section of old belt cut to length of a 1x2 wood scrap, glue it down, clamp it overnight. ezpz. The only extras I did were rounding of the bottom edges of the scrap with a router, sanding, then putting on a couple coats of polyurethane.
Works like a champ.