DIY Geek Coasters (not my title choice!). The tutorial is at Mod Podge Rocks here. Project by “Man Podger” David, who has an amazing Etsy store filled with coasters of every kind here - so he knows his coasters (and yes, I know how ridiculous that sounds, but it helps to have an expert!). This is my all time favorite coaster tutorial! Why? Made by a man, thus a man’s perspective. He used metal blanks that are made to cover up unused outlets ($1.40 each) from the electrical/lighting section at HOME DEPOT and has lots of hints.