Various halachas pertaining to our fourth category "kevashim/shlokos" (preserved and cooked foods).
making boxes (e.g., cardboard birthday cake box, cookie box, etc.). Putting a mattress on a bed. Using liquid soap that becomes foam;
ממצוא חפציך (Mimtzo Cheftzecha): Window Shopping, Waiting by a Bus Stop When Raining, and Looking at Advertisements;