Brothers Jacob Bylsma, 7, at left and Brett Bylsma, 4, delight as the ‘Bristlebot’ craft they worked on at the Escalon Library spins in front of them. A sort of craft robot, the Bristlebots are made with the bristle portion of a toothbrush, some pipe cleaners, a battery and tape, all coming together to create the clever craft. The brothers were enjoying the Science Saturday activity at the local library on Aug. 4.