Looking for a gift for kids who love construction equipment? The LEGO Technic Hydraulic Excavator (42121) lets boys and girls ages 8 and up play creatively. After completing the engaging building challenge, they'll explore the realistic functions of the excavator.Here's how an excavator works. The cool excavator can drive, turn and dig. The bucket can be raised and lowered. The arm moves, the chains run and the body rotates. In the cabin there is a seat and a control panel. The set also includes 4 cones and LEGO bricks for excavation. The model can also be converted into a crawler tractor with backhoe. Challenging building experience. The LEGO Technic universe offers more challenging models for LEGO fans who are ready for the next building challenge. These fascinating sets feature realistic mechanics and introduce kids to the world of engineering. LEGO Ninjago Jay's Electric Mech (71740) teaches kids how to build. They then embark on action-packed adventures with the moving mech and ninja car. The playset includes 2 minifigures from the 4th season of the Ninjago TV series the ninja Jay and the villain Eyezor, as well as a starter element to get kids building and playing quickly. The mega-strong mech holds a large sword in his hands and features movable arms and legs, a spinning blade and a cockpit for Jay. The model inspires children to play exciting role-playing games. A rotating platform with shooter is mounted on Eyezor's car for thrilling action scenes With only 106 parts, this ninja playset presents children ages 4 and up with an easily doable building challenge. A perfect gift for a child who deserves a special treat Jay's electric mech is 17 inches tall, 10 inches long and 16 inches wide. Between action-packed duels, he enriches every child's room as a spectacular eye-catcher.