游乐场

• 氵(water; liquid)RADICAL
• 斿(flag flutter; pennant wave)PHONETIC

Water flowing like a flag fluttering in the wind evokes the image of swimming and wandering.

• 小(small; tiny)RADICAL
• 丿(stroke; string (resembling a zither string))ASSOCIATIVE

Music is like tiny vibrating strings that create wonderful melodies.

• 土(earth; soil; land)RADICAL
• 勿(don't; must not)PHONETIC

A wide field of land sounds similar to the word for things or objects.