Fuel Tanker
materials
1 egg carton
1 aluminum can
3 plastic caps
1 plastic box: length 15.5 cm, width 6.8 cm, height2.7 cm
Fuel Tank
but the aluminum can on the back of egg carton
Bridge
but the plastic box: (length 15.5 cm, width 6.8 cm, height2.7 cm) on the front of the egg carton
Egiens
but the three plastic caps on the back on the egg carton