MB3 185a: Monopoly, Chess, Marbles and Other Games on Shabbos (338:4-8)

Clapping to scare birds away on Shabbos. Playing marbles and Monopoly (or other games with play money) on Shabbos.

Crossword puzzles, etc. (without writing)

Drawing water using a water wheel on Shabbos.

Protecting fruit on the roof on Shabbos from the rain, placing a bucket under a gutter on Shabbos to collect rainwater.