There are two easy types of plaster you can make from common household items. The first is a glue mixture. You mix two parts white glue to one part warm water. Mix together in a bowl until soupy. It will be watery but still kind of gluey. The second mixture is a flour mixture.Mix two to three cups flour with one to two cups warm water. Mix in a bowl until there are no lumps. You now have two easy plasters that you can use to make tons of fun projects.