Arpeggios can make basic chord progressions sounds beautiful, flowing and impressive, and they are also great for helping to build hand independence, finger strength and dexterity. On top of this you can use them to improvise beautiful piano music. And the great news is that they are perfect for beginners on the piano as you just need to learn certain patterns in order to play them.
The first two are essential arpeggio patterns everyone pianist should know, and the third pattern has a bit of extra magic!
Here is the accompanying piano tutorial over on Youtube: https://youtu.be/j9YcYRQq9xM