kosher diapers...
It is not so simple, there are issues of opening up the "seal" from when they are cut, nothing to do with Velcro or tape. Also, Velcro can be a problem for makeh bapatish too, and koreah. We try to open the diapers and Velcro strips before Shabbos.
I heard beshem the Stamar Rav, Aser bishvil shetisasher, as in - make something assur to get rich.