Automatic formula maker
Advice on water temperature differs by country: the NHS uses water at 70 °C or more to kill bacteria in the powder. Each option here says whether it reaches that. Follow the tin, and never change the powder-to-water ratio.
Babymoov Babyfläschchenzubereiter Milky Now (A002301): 70 €
Tommee Tippee Perfect Prep machine (426774, black): 120 €
Baby Brezza Flaschenzubereiter Formula Pro Advanced (white): 290 €