There are a lot of recipes on the internet for how to make Mod Podge - here are all of the good reasons NOT to do it yourself.
How to make an easy photo canvas
DIY Glitter Letters {Mod Podge}
Does Mod Podge Dry Clear? Find Out Here! - Mod Podge Rocks
Bastelkleber Mod Podge selber machen – wikiHow
Bastelkleber Mod Podge selber machen – wikiHow
Mod Podge Rocks DIY Magnets - Mom Spark - Mom Blogger
How to Make Photo Coasters! {fun gift idea} - The Frugal Girls