Remember, your little one's perspective will be at knee level--not a very interesting view! So, let her stretch her legs for a while, pick her up and point things out for a while, sing and chat with her--all simple things. Other than having a small drink and small snack for a very long queue, that should be more than adequate to keep her entertained. I usually end up chatting with little ones in line or playing peek-a-boo with them--and I'm not very good with children! *LOL*