"צביעה באוכלים" (coloring in foods) - the stringent view of some poskim
Folding a Tallis Katan and Folding Paper;
Using nice smelling liquid soap, placing lavender flower bars and other essence of deodorizers into drawers or closets, and putting unscented powder into shoes...
(Temporary Ohel) Some more issues in reference to umbrellas on Shabbos;