Put lavender in a mesh tea ball/strainer, and drop it into a small saucepan with water and sugar. Heat on medium and stir in sugar (and agitate lavender tea ball) until the sugar is dissolved. Remove from heat, and continue to stir/agitate the tea ball and taste test every minute or so until the lavender flavor is the intensity you like.
When the flavor is to your liking, remove the lavender tea ball. Allow the syrup to cool to room temperature, then either add to your drink recipe, or transfer to an airtight glass container and store in the fridge for up to 2 weeks. That’s all there is to it!