Naturquartett Wasser is a small collection of games by Haba. The cards are Wind- & Wetter-Karten; sturdy cards that you can clean when taken outside.

Components:

36 Cards
1 Wooden frog
12 Wassersteine (beads)
Rules

With this small package of components, you can play different games: Quartett (A Game of Authors), a Quartett variant, a Quartett variant for 2 players, a Charades / pantomime game. The rules also suggest to go outside with the cards and search for all the animals pictured on the cards. The number on the card shows how many points you earn for finding that animal. The more rare the animal, the more points you get.

Also in the rules: a few tips on other outdoor activities. Measure the depth and speed of water, make your own watermill, etc.