(Kore'a-קורע Ep. 51) (#719) Plastic containers that are sealed with a adhesive label, plus the containers that have a shrink wrap plastic around it.

interesting practical applications which apply to coloring foods on Shabbos;

A deeper understanding into the 5 conditions needed to fold something on Shabbos and one should be careful to fold their TALIS on Motzi...

Halachic Implications of Changes in Items When Gathering. Unusual Methods of Gathering or Collecting for Disposal;