Related Clues:

• Keep changing
• They also have their ups and downs
• Go one way, then the other
• It goes up and down
• Alternate
• Where one might be held up
• Can't decide
• Board with a couple of seats
• Apparatus for two
• Park fixtures
• Keeps changing one's mind
• Playground contraption
• Playground piece that has its ups and downs
• Yo-yos
• Park diversion for two