K'NEX Architecture: Eiffel Tower - Build IT Big - Collectible Building Set for Adults & Kids 9+ - New - 1,462 Pieces - 2 1/2 Feet Tall - (Amazon Exclusive)
Brackitz Pulleys 90 Piece STEM Simple Machines Building Toy for 7, 8 and 9+ Year Olds | Kids Educational Engineering Construction Set | Hours of Creative Learning and Fun
63074 Magformers Creator Carnival Set (46-pieces) Deluxe Building Set. Magnetic Building Blocks, Educational Magnetic Tiles, Magnetic Building STEM Toy Set
Joyzzz 723pcs Robot Building Kit, 8-in-1 Kids Model Army-military Truck Engineering Construction Vehicle Building Blocks Set, STEM Learning Building Bricks Toys for Kids Children Boys Girls Age 6+