Daily - toaster, kettle, Thermomix
Fortnightly - Slowcooker, stick blender

That's it - we had a food processor which got rid of when got the Thermomix, but having a tiny kitchen and not that much interest in cooking never had much. The Toaster and Kettle are the only things purchased with real money, the slowcooker I won in a raffle, the stick blender and old food processor bought because we had points from work in some reward scheme to use up. The TMX was a gift.

Reading this thread I think we have done well (as in minimizing appliances) because we never got engaged and didn't have much of a wedding, and don't really do presents, so haven't been given any kitchen appliances apart from the TMX.