Decoration for your 21st birthday party should always include something to do with liquor since it is when you become old enough to legally drink.

You also mustn’t forget to have lots of balloons and other special items to let the person turning 21 feel special. Along with having the party area decorated, you should also decorate the birthday person with balloons on their wrists or tied to them somewhere so you can easily find them in a crowd of people.

You can find swizzle sticks and novelty glasses to go along with a drinking theme.
They do make novelty shot glasses as a 21st birthday decoration and they come in chocolate and other flavors. If you are creative enough, you can make your own shot glasses from blocks of ice for the ultimate crowd pleaser. Everyone enjoys their drinks being cold and what better way to keep them cold than by using ice for shot glasses.

The rest of your birthday decorations will depend upon your theme, which we will get to later.