Opening and closing cereal boxes, cookie packages, books, etc. with letters, numbers, pictures printed on them.
Is One Allowed to Walk with Hiking Shoes or Anything Similar on a Dirt Ground on Shabbos?;
Understanding the concept of "משקה הבא לאוכל" (squeezing liquids onto solids) in greater detail.
Picking Up Fruits Which Fell Off the Tree on Shabbos. Walking on Grass Barefoot;