Cornstarch thickening fluid (Maïzena)

Start with water, then spoon in Maïzena until the mix feels fun: pours like a liquid, but goes firm when you slap, smash, or squeeze it. Pour with cups, pound with toys, poke and drip — then rinse everything and wipe down.

1. 1

   Water + tools

   Pour a shallow pool of water into a wide bowl on a wipeable tray. Set cups and smash toys nearby.

2. 2

   Maïzena until fun

   Spoon in Maïzena a little at a time until it feels fun — firm when you poke or smash, still drips when you pour. No exact ratio.

3. 3

   Pour vs smash

   Slow pour with cups flows; fast smash with a toy feels firm.

4. 4

   Play

   Pour, smash, scoop, slap; try a ball that melts when you stop squeezing.

5. 5

   Clean-up

   Rinse toys and cups; scrape leftovers into trash (avoid pouring lots down the drain); rinse bowl and hands.

Ran at home (Nicolas): water first, then Maïzena until it feels fun; prep cups to pour and toys to smash the mixture — logged as tested.

Walk fingertips across a tray of the mix (quick steps stay up; slow ones sink). Compare with flour + water.