I want to make my own coasters and I need Mod Podge to do it. I saw that I could just make it myself. Here is where I learned how.
You need a jar or container. I was too cheap to buy a jar so I used tupperware. All you do is mix 1 part Elmer's Glue and 1 part water and mix it up! I know it worked because it worked to glue scrapbook paper on the tiles I am using for coasters. One side note: the mixture does tend to settle to make sure to shake it up whenever you need to use it.