Keva: Contraptions Reactions Slime & Putty A vibrant scene filled with

A vibrant scene filled with planets

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Keva: Contraptions Reactions Slime & Putty A vibrant scene filled withGet the fun rolling with this unique set that includes traditional KEVA planks, special colored planks and a variety of unique pieces to set off chain reactions. Builders can set up their contraptions to cause reactions like ringing a bell, knocking over a bowling pin and more. Build a course and see if the pieces react as you predict!