DIY whiteboard coasters
This may be the most exciting tip out of all the ones in this compilation. There is a way to make whiteboard coasters that would not only look amazing but would also be helpful in keeping track of which cup belongs to whom. First, you need a base: tile, wood, or even cork will do, although a sturdier material is better.
You must paint white for whatever material you choose to work with, ensuring the layers are smooth and opaque. Then, cover the surface with clear contact paper. This way, anything you write will be easily wiped off. Remember to use whiteboard markers and not permanent ones, though.