String toys (2-3)
I believe the answer is:
yo-yos
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">string toys</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for yo-yos that I've seen before include "Moves up and down" , "1930s spinning toys" , "Up-and-down toys on string" , "Toy with spool and string" , "Toys with pair of joined discs and string" .)