Special gardens are known, in which the department called robinsonada was organized. This department stocks a considerable amount of various building materials, mainly wood. In Robinsonade, children can build various structures by organizing themselves into groups and helping each other. This kind of fun meets with great recognition and interest, not only from young people, in all gardens during the holiday, but caregivers and educators. Such games, however, require quite close supervision, as well as instructional assistance.
The fifth group is water-related play equipment. The intake of water as a play element can be very different. They can be small ponds with overflowing water , paddling pools, various types of showers and gushing streams . In order to maintain safe and hygienic play conditions in such places, a depth not greater than 30 cm, the water is kept in a continuous flow state, strictly controls access to water and protects the valves on the pipes against unauthorized access; the flow or spraying of water is only started at the right temperature.
All children's play equipment should comply with certain general safety requirements. So they should not have sharp edges, rough surfaces, should not be dirty, etc.. The places where the play equipment is placed cannot be random. For example, they cannot be placed in close proximity to devices, whose users may interfere with each other. Fall-hazard play equipment, trips, etc.. should not be placed on hard surfaces. Most of these devices are placed on surfaces covered with coarse sand or tartan. Placing play equipment on grassy surfaces leads to a very rapid destruction of vegetation. However, this type of surface seems to be difficult to replace, especially in play areas for preschool children. In such cases, the grassy surface can be protected by frequently moving the devices and carrying out appropriate maintenance procedures. However, the use of a grass surface is possible only up to certain limits of intensity of use.