An s-hook for my oven handle. The hook stretches to fit around the handle and then cannot fall off by itself.

The default settings are for a 27 mm diameter handle. Note that the small diameter parameter isn't 27mm -- it needs to be larger to allow for enough space for the handle to fit through the 60 degree opening on the small end. A good rule of thumb is to make the small diameter 30% larger than the handle you will attach it to.