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Build your own medieval siege engine from pre-drilled planks, a little glue and the help of easy, step-by-step “blueprint” instructions. Then let the fun and experimentation begin! What will go farther: a marshmallow or a piece of macaroni? Alter the counterweight to adjust the trebuchet’s hurl, and practice knocking down a field of target planks using the two included balls.

Ages 7 and up.