Recommended age: 8+. Adult supervision required! The Csócsi 500 is a homemade squeezable dumpling character: its body is a double balloon filled with a cornstarch mixture, the tied balloon top stays visible as part of the design, and it sits in a small woven basket.
Recommended age: 8+. Adult supervision required! Over two days, vinegar dissolves the shell of a raw egg, leaving a translucent 'bouncy egg' jiggling in its membrane — spectacular slow chemistry on your kitchen counter.
Recommended age: 6+. Adult supervision required! On a plate of milk, drops of food colouring burst into swirling colours on their own the moment dish soap touches them — the most spectacular demonstration of surface tension.
Recommended age: 10+. Adult supervision required! With the help of yeast we conjure a thick snake of foam from pharmacy-grade 3% hydrogen peroxide — the safe, at-home version of the classic elephant toothpaste.
Recommended age: 8+. Adult supervision required! A message written in lemon juice vanishes as it dries, then reappears as brown writing under gentle heating — spy-movie chemistry straight from the kitchen.
Recommended age: 6+. Adult supervision required! From honey, syrup, dish soap, coloured water and oil we build a layered liquid tower in a glass — because not every liquid is equally 'heavy'.
Recommended age: 8+. Adult supervision required! From a saturated table-salt solution we grow sparkling cube-shaped crystals on a thread over several days — a patience game that can start your own mineral collection.