Add cinnamon and sugar to a small plate and stir together gently to combine. Rub a lime wedge along the rim of each glass, then dip into the cinnamon-sugar mixture.
Fill your glass halfway with ice. Add tequila, triple sec, apple cider, and lime juice. Stir to mix.
Garnish with a fresh lime wedge, apple slice, and/or cinnamon stick.
Notes
For best taste, serve and enjoy immediately to prevent the ice from melting and watering down the cocktail.