Search query: halloween customs for boys ages 7 and 9 years old
Product: LEGO Chain Reactions (Klutz Science/STEM Activity Kit), 9" Length x 1.06" Width x 10" Height
Brand: Klutz
Color: Multicolor
Highlights: Nappa silver award winner
Design and build 10 amazing moving machines - teach your bricks new tricks
Comes with 80 page instructions, 33 LEGO pieces, Instructions for 10 modules, 6 plastic balls, string, paper ramps and other components
Includes a 80 page instructional book with Klutz Certified crystal clear instructions
Includes more than 30 essential LEGO elements
ESCI relevance label: I