Probably the most well known Estonian stitch is the Nupp bobble stitch. This bobble style is traditionally used in lace patterns for Estonian lace shawls from Haapsalu but also provides a nice bit of texture when combined with other stitch patterns for a modern look.
In this tutorial Aleks Byrd will show you how a large bobble stitch in a contrast colour used as a nose for the Gnomad gnome.