The Finger Exerciser is a super stretchy tool for strengthening finger extensors and also makes a great proprioceptive fidget.
The Finger Exerciser is a super stretchy, rubbery gadget that can be used most successfully to strengthen finger extensors. It has a special ring for the thumb and a loop for each finger. Place the thumb into the central ring, and each finger into a ring, starting with the index finger in the ring with the longest string. Now stretch the fingers out away from the thumb, against the resisted pull of the rubbery bands. The Finger Exerciser can be can be used by both children and adults.
It comes in two resistances - the Green Finger Exerciser is slightly less resisted than the Red Finger Exerciser.
The Finger Exerciser also makes a great proprioceptive fidget!