Garden disco
This is a great way to tire your little ones out! Play some of their favourite music through a portable music player, whilst they boogie around the garden. To make this more interesting you could turn it into a listening game: each time the music stops your little one has to either sit on the ground, or stand as still as they possibly can.
I-spy
From your point of view, this outdoor games is is just a big patch of grass. To your little ones it’s a whole world just waiting to be explored. And that’s just what a simple game of I-spy will encourage them to do: get out in the garden and really notice what’s there: whether it’s a leaf, a bird, or a very wriggly worm!