Maybe you rent, or you just like to shake things up regularly. Either way, you can DIY this low-residue wallpaper glue with ...

In this activity, you will be able to make glue out of milk! The main ingredient is a protein in milk called casein that you will turn into your own glue, and then test against a commercial glue.

Unfortunately, the fact that most wallpaper glue leaves residue behind is a dent in the pro-wallpaper argument. But it seems there's a DIY paste that might fix that issue. You can make the glue by ...