She'll be excited by all of these fun things to do on her 21st birthday party for girls turning 21! These 21st birthday checklist ideas are a must try, as they make the perfect 21st birthday decoration ideas for guys, fun 21st birthday game ideas, and nice 21st birthday food and drinks ideas. From trendy 21st birthday themes ideas, to fun 21st birthday outdoor decorations ideas, to the most wanted 21st birthday gifts ideas, your celebrant (daughter, son, best friend) will love to try them…