Many here use the Bololo baby bottle sterilizer but it was discontinued. From my reading people now like this one linked below a lot. Very similar to the Bololo.

I use the Grownsy for travel if I have enough room in my suitcase. It doesn't steam as long as Bololo but the Bololo is too large for travel so I make do.
https://www.amazon.com/dp/B0FGX5P2CN/