Scientific Hand Boiler

This classic Scientific Hand Boiler from Toy Network looks like magic, but it’s pure physics in your palm. Hold the glass bulb and watch the liquid “boil” and rise—no batteries, no tricks, just body heat doing the work. It’s the kind of pocket-sized experiment that stops kids mid-sentence and gets them asking why.Quietly brilliant, this toy introduces concepts like thermal energy, vapor pressure, and cause-and-effect without a worksheet in sight. Kids feel like they’ve discovered a secret scientific loophole, and parents get a hands-on lesson that sticks because it’s surprising, simple, and repeatable.Features• Sealed glass hand boiler with colored alcohol liquid• Demonstrates heat transfer and basic thermodynamics• No batteries or setup—powered entirely by body heat• Compact size, perfect for desks, shelves, or science kits• Recommended for ages 8+ with supervision