Originally Posted by
Utopian
Couple of options for a temporary strop.
1. Blue jeans: if you are wearing them, sit down and strop along your thigh. If you are not, place a board or something flat inside the leg, pull the fabric taut and strop away.
2. Newspaper: you can just use it rolled up and strop an x-stroke over the cylindrical surface. Alternatively, wrap a few pages around a board or other flat object and strop on that.
3. The inside surface of a cereal box makes a viable strop. Just make sure the cut edges do not protrude up.