It is a pretty common first project to use an Arduino (or similar) to blink an LED. Which, of course, brings taunts of: you could have used a 555! You can, of course, also use any sort of oscillator, ...
One of the major kitchen blender brands on the market, Ninja is considered a very popular choice. In fact, a survey by research and strategy firm Lifestory ranks it as the top most trusted blender ...