The mixer as a toy is definitely in keeping with the style of your game and it is a great idea. Your animation is also great. I think to make the toy better, I would suggest making it so that the same letter doesn't appear after two times in a row when making a drink as this made me feel like I pressed the button on my keyboard and it didn't do anything. A possibility for a future update could be to make it more challenging by adding a timing element to the shaking. I like what you've done so far and I can see potential in your idea