Have a house party
Have a big birthday party for family and friends
Blow up 21st birthday balloons and put different tasks in each one
Hire a Party Bus
Have a garden party
Host a Masquerade party
Have a this is your life so far party
Rent out a club for the night
Have a cocktail party
Have a party on a boat.
Hire a marquee to host your party
Get a polaroid or disposable camera for everyone to snap photos with.
Have dinner with Family and Friends in a restaurant.
Write a list of 21 things to do over a few days for your 21st birthday
Have a Shisha pipe party
Throw a party where everybody is wearing black and the birthday person is wearing colour
Go on a murder mystery night
Hire a stripper
Rent a beach house with friends
Have a casino themed night
Have a neon themed party
Rent a Party Canal Boat
Use twinkle lights to decorate meal area
Put up photographs of the person whos birthday it is around the room
Have an adult game of pass the parcel - wrap up something novelty and hilarious
Have a UV paint party
Rent a bouncy castle and/or some sumo suits
Have a few large tubs of retro pic 'n' mix for people to nibble at
Enjoy looking at all the baby/child photos with friends and family
Hold a fancy dress party for your birthday party and take lots of photos!
Hire a limo to take you and your friends to your destination
Have a pool party
Get drunk with your friends and not remember anything in the morning
Have a disco or a live band
Have a hot tub party
Have a marvel theme party
Host a barn dance. They're so much fun and will have everyone up dancing and laughing their heads off.
Have a Burlesque fancy dress party!
Go to a strip club
A formal dinner party and dance
Have a karaoke party
Have a bonfire with your friends if the weather is right!
Paint an old throne looking chair in gold and get everyone to take photos in it at the party
Do a childish party e.g party rings jelly and ice cream to remind them of their childhood
Play the card game 21 as you are actully turning 21.
Play adult spin the bottle
Have a specific themed party and give everyone a character to dress as on their invitation
Play adult pass the parcel - Put rude/joke gifts inside
Go to or host a roller skating disco
Have a kids party with pin the tail on the donkey, musical chairs and party bags
Go clubbing at your local night club or in the city
Get a team together and go to your nearest Laser Tag venue
Have a prom party with a posh dinner and dance
Find a rave or weekender to go to
Have a beach party with a bbq, music and maybe some cheeky volleyball
Organise a treasure hunt around London
Have an Indian themed ball
Hire a psychological magician/entertainer to wow the party guests
Have a quiet gathering to celebrate
Garden party with a marquee maybe (smart dressed)
Organise a special car (eg. Porsche) to take the birthday person to their meal or party
Organise a picnic in a special or relaxing environment with close family and/or friends
Arrange with the local newspapers to have the last 21 years, DOB, of publications printed off
Go to a concert with your mates
Hire an ice cream van to attend the party venue
Get a Domino's Pizza, Pizza Hut Express or another local Pizza takeaway
Toast with a glass of Champagne and have a bowl of strawberries with cream for people to help themselves to.
Have a Luau (Hawaiian themed) party
Have a Toga party!
Eat a lot of cake... Maybe even play cake eating challenges but preferably not combined with drinking games!
Have an arabian themed party!
Put up a 60's themed party
Play strip poker
Have a custom ice sculpture luge made with alcohol running from it that people can help themselves to
Have a poker night with everyone dressed in suits
Get a local takeway meal delivered
Have a quiet night in with the other half
Go shopping for the day with your close girlfriends!
Hire the exclusive use of an ice rink for your party venue