No, really, an old-school egg beater
This is my egg beater:
It is, really, what I use to mix anything – be it a cake batter or frosting – where a spoon or a whisk won’t do the job.
I’ve had it for years.
I works for me.
I live in a small apartment and have limited counter and storage space. I do have my eyes on a few models of stand mixers, but I’m happy with this old egg beater for now.
You don’t NEED complicated or fancy equipment to bake awesome stuff.