Fidget Hinge

thingiverse

I'd suggest going with the L3 because its compact size allows for smooth swinging without hitting your hand. This toy is designed to flex easily in one direction. When you swing it quickly back and forth, it produces a pleasant clicking sound. Once printed, the toy will initially feel stiff but can be snapped into motion. The L designation indicates the number of hinges, with L1 being the smallest and L7 representing the largest configuration.