Answer:

yoyos

AnswerCrossword Clue
YOYOSThey have strings attached
YOYOSDuncan diversions
YOYOSVacillates
YOYOSFad with ups and downs
YOYOSFluctuates
YOYOSVacillators
YOYOSPlaythings on strings
YOYOSDingbats
YOYOSToys with strings
YOYOSToys on strings
YOYOSGoofballs
YOYOSGoes up and down
YOYOSNinnies
YOYOSChuckleheads
YOYOSDuncan devices
YOYOSThey have their ups and downs
YOYOSThings with strings
YOYOSStringed toys
YOYOSToys that can be made to walk
YOYOSThey're used to rock the cradle
YOYOSToys that go around the world
YOYOSStringed instruments?
YOYOSThey're used to walk the dog
YOYOSToys that go around the world?
YOYOSSchmoes
YOYOSThey may walk the dog
YOYOSToys that have you pulling strings
YOYOSToys with finger loops
YOYOSToys bouncing on strings
YOYOSToys that have their ups and downs
YOYOSFluctuates wildly
YOYOSSpinners on strings
YOYOSToys on a string
YOYOSIs wildly unstable
YOYOSIsn't consistent
YOYOSFools
YOYOSDuncan toys
YOYOSPlaythings for junior.
YOYOSToys.
YOYOSToys that seem to defy gravity.