putting down items on the ground in a slippery area. Raising and lowering a chair, fan, etc. Putting down sand in a slippery area;
Understanding "פסיק רישא דלא ניחא ליה" (inevitable results from one's permissible action whereby one receives no benefit from).
מחמת חסרון כיס Machmas Chesron Kis: A Mezuzah;