You buy thisFine motor2–4 yrsAt home
Large bricks
Small enough to build with, big enough to be safe.

Large bricksView on Amazon
Prep
0 min
Mess
None
How to play
Towers first, then start naming what you're making — a bus, a bed, a dog. Ask him what his is before you decide what it looks like.
What you need
A tub of large interlocking bricks.
What it secretly builds
Fine motorPressing two bricks together and pulling them apart takes real hand strength and both hands working against each other — harder than it looks at two.