I know a good prank its called "The Invisible Rope" prank where you act like you have an invisible rope and it works well on a street where there are cars. Here is a video to show you this prank.

Stand in a "Keep off the Grass" territory

Stick a gum in a "No Littering" sign board

Withdraw money from the ATM. Scream "I won! I won!"

Hire 2 private investigators and make them follow each other

Dress up as ronald mcdonald and go aplpy for a job at burger king.

Go up to a random lady with a daughter and say her son is adorable.

Stare intensely at the back of your classmate. Figure out how they felt it

Buy angry birds stuffed animals. Walk around town throwing them at people.

Jump in the car and play "Eye of the Tiger". Follow joggers to motivate them

Run up to someone random on the street and slap them with a loaf of bread.

Flag every YouTube video that last more than 10 hours so that the staff will watch it

Go to a horror movie and when everyones quiet scream as loud asyou can... see who jumps.

Put a dora doll in the middle of Walmart.When someone tries to pick it up yell "SWIPER NO SWIPING".

Well, this is what google is for. BUT, being the nice person I am, here is a link to a guy I am subscribed to on youtube. He posts tons of videos on pranks. So I think you should check him out, and see some of his videos. http://www.youtube.com/channel/UCCsj3Uk-cuVQejdoX-Pc_Lg

the most easiest and cheap prank to pull is to hide behind some wall or something and pounce and scream suddenly when the person you're pulling the prank on passes by. ;) you know like scare them or something like that. its really silly but oh well. i and my sister do it all the time. ;)

The game that is on the pc where you have to guide the ball through the maze then when you get to the end a monster scares you.

i remembered another prank!

since you're a girl you can play the fake girlfriend prank. all you do is watch people on the street and when you see a couple coming towards you, grab the boy's hand a start chattering away like you know him since ages. most reactions are funny. although if you get a friend with you it'll be funnier. i mean, it gets boring to laugh alone :P

Cutting off a persons shoelaces lol. Or pulling his/her chair when shes about to sit down.