I'm looking to plant a small shade tree (or two) next to my toddler's play area to shelter it from the afternoon sun. The tree would be planted about 20 feet from a wood fence and about 40 feet from the rear of my house. Because of this compact area and to limit the amount of lawn I sacrifice (my son love to run!) I would like a smaller tree.

Are there any small-ish shade trees you could suggest? I am also open to large shrubs. The area obviously gets lots of sun.

Thanks!