Understanding the concept of "שכר שבת בהבלעה" (shabbos earnings included with weekday earnings).
The Separation Has to Be with אוכל and פסולת (Good and Bad);
pull tab rings attached to orange juice containers, grapefruit juice containers, etc. (Making a nice usable opening on Shabbos.);
(Squeezing materials.) using Toothbrushes on Shabbos;