There is a crucial lack of playground for children in Cameroon. Especially in bigger cities and very few new plots to install some.
However there is many schools and schools do have often enough place for playing.
Why not installing some in (public or private) school yards and let paid for them at the week end? In the week the scholars can also enjoy the place.
Playgrounds as in the picture can be fixed with cement so that people could not steal them.