My favorite is an immersion blender. I have a cord free model. I like to use it making sauces and eggs.
Sauces to hide veggies from my toddler who doesn’t realize the veggies are there for fortification and health.
Eggs I like to blend/whip air into the scramble. Cheese is an easy add too. They are super fluffy and delicious.
As far as cleaning it, I wipe any missed chunks off, put warm water plus soap in a cup, and blend til stiff peaks, JK.
What is your favorite kitchen gadget?
My favorite in terms of just being neat and cheap is my “safety” can opener. https://www.amazon.com/Safe-Cut-Can-Opener-Restaurant/dp/B0761PZC5F
It’s not about it being “safer” to me. It’s just plain better. It completely unseals the tops of cans without puncturing them, meaning the lid comes completely off at the rim. Never failed me. Opening something like some cat foods or refried beans is much better because it leaves no lip for the contents to catch on. I use it for pull tab cans too!