Pour the salt or sugar onto a small plate. (A shallow, small bowl also works.) Shake it gently so that it forms an even layer.
Hold a lime wedge or lemon wedge in one hand and your glass in the other. Use the lime wedge to moisten the top and outer lip of the glass. A thin layer of fresh lime juice is all you need.
For a lip rim: Dip the rim of each glass in salt or sugar.
For a band rim: Roll the rim of each glass in salt or sugar.
Tap the glass to dislodge any excess.
For sprinkle rims
Pour the sprinkles onto a small plate. (A shallow, small bowl also works.) Shake it gently so that it forms an even layer.
Use your finger or a food-safe paintbrush to paint on the honey, syrup or frosting.
Roll in sprinkles. You can also use this method for cookie crumbs, crushed candy and other sweet rims.