We tried the £1 Ikea milk frother - this is what happened -
PRODUKT Black Milk Frother - Popular & Handy - IKEA
PRODUKT Milk Frother Black (503.011.66) - reviews, price, where to buy
Amazon.com: Rechargeable Milk Frother Battery Operated,2-Speed Portable Travel Frother,Electric Milk Foamer Coffee Frother for Latte, Cappuccino, Hot Chocolate Drink Mixer with Double Mini Whisks and USB Cable: Home & Kitchen
Electric Handheld Milk Frother Foamer Egg Beater - Handheld Electric Milk Frother - Aliexpress