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this JCB truck is made from a dozen syringes and saline tubes. such trucks are used for
moving earth. join two syringes with tube filled with water. by pushing one syringe
other gets pushed too. now make a hydraulic jack. fix two syringes in a CD box. lift and
lower a truck with an hydraulic jack. this JCB performs many actions. the first plunger
makes the jib move up and down. this is the closeup view. the second plunger makes the
bucket to swivel. this is the closeup view of the bucket swiveling. the third plunger
makes the whole crane move left or right. here is the closeup view. the JCB can move
on wheels. the fourth plunger lifts the front wheel by two jacks. the fifth plunger moves
the boom up and down. the JCB performs multiple motions. you can now see the JCB pick a bundle
of grass, lift it, turn it and keep it aside.