There is a particular quiet that settles over a room when a child is building. Whether it lasts depends a great deal on the blocks themselves: thirty-six pieces in rubberwood and acacia, cut to consistent lengths with the bark removed so every face is smooth and true. That matters more than it sounds, because blocks that stack square build taller, and a tower that stands is what keeps a child coming back. The wood is sustainably harvested and left unfinished, so the color and grain shift from piece to piece, and the whole set gathers into an embroidered cotton bag at the end of the day. It will still be in use long after the shape sorters have been outgrown.

• Rubberwood and acacia wood, 21 pieces in an embroidered cotton bag
• Made in Vietnam
• Wipe clean with a damp cloth and air dry
• Ages 12 months and up