I like these examples of gross motor components that are embedded in the landscape and offer a variety of interactions, yet (maybe) aren't high enough from the ground to require safety rails, etc.
how to build an outdoor gym - Google Search
Xccent core trainer, exercise equipment, outdoor fitness equipment #fitness #exercise #health
CLIMBING PEG BOARDS - MADE IN THE USA!
Best.Outdoor.Gym.Ever! Outdoorgym über dem Meer
Project for the hubby :)
Wenigstens ein paar davon ;)
Outdoor gym sit-up exercise station; picture 2 of 9
Wooden Playground idea