Do you have to use a mixer at all? My mixer broke many years ago, and since I couldn't afford a real one, I went thru several hand held models till I gave up. I now mix everything by hands depending on the dough I either use a fork or a balloon whisk. Too be honest I don't bake a lot ( trying to avoid the calories) but when I do, nobody complains. Just made a batch of brownies and coconut blondies this weekend that are scrumptious. When I make bread dough I actually prefer to knead it by hand.
I also have a small food processor that is on its last legs and I use that sometimes to beat egg whites.