DIY Coasters From Cardboard

Let’s make some coasters. You'll need some cardboard and duct tape. 

I cut little slits like this to make sure I cover the edge of the circle nicely.

You're done when you successfully cover your entire piece of cardboard.
Psstt: While these coasters will protect your surface from your hot and cold beverages, you’ll have to clean the condensation on them because they don’t have much of a absorbing ability. Oh, who cares, they look super cute and cost next to nothing :-).