Let kids practice their letters in this sugar writing tray. I'd probably use something else other than sugar, but still a cool idea.

Montessori screw board

Montessori screw driver board (with Philips head) will help teach children the practical life skill of using a screw driver. The board will also teach hand eye coordination while working on fine motor skills.

aprender con el juego kapla

Body outlines in the block center - great science & math connection (count the # of blocks needed) Perimeter.