Hola it’s Sarah. We did K’nex. Josie and I made a crane it can’t lift stuff yet. We had a tube, syringes, K’nex and tape. We used the syringe and tube for air pressure so it would be able to move. We had to use a lot of bits. Our model was a bit small but it worked. Some of the the other models were really big or could move.
by Sarah