Mix 1/4 cup flour with 1/4 cup water in a small bowl
Stir until smooth
Add a little more water if too thick
Heat the mixture in a saucepan over low heat
Stir constantly until it becomes thick and sticky
Remove from heat and let it cool
Use immediately or store in a sealed container
For a stronger glue, mix 1 part white school glue with 1 part water
Stir until combined
Apply with a brush or stick
Let it dry completely