Glue can be a really helpful addition to your leather working tool set, though a common issue is that they dry out quickly if sitting out open while you work. A glue pot is a small plastic holder for glues and adhesives that is air tight. Glues can be stored for long period of time in glue pots.
When you want to use the glue, an air-tight cap unscrews open, revealing a brush and portion of the glue. The brush can be dipped into the exposed glue and applied to the leather. Once finished, just screw the air tight cap back on and the glue will remain in great shape for the next use. Glue pots are a helpful tool to have if you do a fair amount of glueing while working with leather projects.