Life size Lincoln Logs made out of pool noodles~ 15 pool noodles from the dollar store, cut in half, cut notches out easily, with scissors = hours and hours of fun playtime! These were my favorite toy as a kid, love the life size!
MPMK Toy Gift Guide: Top STEM toys (Science, Technology, Engineering, & Math) Picks for all ages - so many great toys for working on engineering skills here! Love the detailed descriptions and age recommendations, so helpful!
Gift Guide: The Best Building Toys (From Blocks To Robots)