Enrich the "sensory diet" of your learners. These "fiddles" may look like toys to the untrained eye, but they are truly serious learning tools. Kinesthetic learners will focus better and absorb your material more quickly if they have something to do with their hands.
6 chunky, brightly-colored blocks strung together with elastic to put into whatever shape you want. Attach 2 or more together and the possibilities are endless. 10" long from end to end.