One of my favorite aspects of Montessori is following the interest of the child.
This morning after helping me with some chores, I found Barrett wandering around the house with a hammer. He had apparently wanted to build something. Which, let's be honest, was simultaneously cute and terrifying. He has done a ton of work on our DIY screwdriver board (still a favorite) but I thought it would be a great chance to show him how to appropriately use a hammer again.
I was able to grab some nails and a scrap piece of wood for him fairly easily. Than I put a few holes in the wood for him to practice hammering nails into.
After that, I left him alone. He found a level to use and a pencil to mark where he wanted some extra nails to go in addition to the materials I gave him.
Afterwards he wanted to design (and build) a fireplace. I wasn't exactly sure how the fireplace was going to work out but I told him he could design one. We LOVE google sketchup. It's free and a great resource for working with 3-D shapes and buildings.