Ones I've successfully done are in bold
Also, these have been slightly adjusted...I obviously wasn't thinking clearly when I wrote (some of) them originally (I mean, I would never be able to only drink water for a month. What would I do when I baked chocolate chip cookies? Or when we had Oreos?).
1. Go see the Olympic Games
2. Visit all the continents
3. Learn how to ballroom dance
4. Go on a road trip with friends, across the U.S.
5. Get a tattoo/second piercing, cause I'm a little bit of a pain wimp
6. Celebrate Mardi Gras in New Orleans
7. Grow a garden
8. Go skinny-dipping
9. Visit Disneyworld, and Disneyland
10. Own a hedgehog
11. Swim around the lake at my camp
12. Bake a pineapple upside down cake
13. Buy and learn to play the melodica
14. Memorize Yakko's World song
15. See the Brussels' Flower Carpet
16. Visit the Seven Wonders of the Middle Ages (Stonehenge, Colosseum, Catacombs of Kom el Shoqafa, Great Wall of China, Porcelain Tower of Nanjing, Hagia Sophia, Leaning Tower of Pisa)
17. Go to the Cherry Blossom Festival in Washington D.C.
18. Cook an entire meal for someone else
19. Go kayaking
20. Learn how to pogo-stick
21. Milk a cow
22. Visit the Kiyomizu temple in Japan
23. Crowdsurf
24. See or dive in the Great Barrier Reef
25. Only drink water/milk for a month.
26. Visit the Wizarding World of Harry Potter in Florida
27. Read all of Time Magazine's 100 Books to Read Before You Die
28. Learn to play the piano
29. Make an amazing, complicated and big friendship bracelet, and give it to someone else
30. Go white-water rafting
31. Get published, in any sort of book
32. Wake up early at camp just to watch the sun rise
33. Try fencing
34. Count down the New Years in Times Square
35. Learn to play chess
36. Drive all the way along Route 66
37. Ride on a zip line
38. Do a somersault off the diving board
39. Climb a mountain
40. Visit the Neuschwanstein Castle in Germany
41. Make Play-doh
42. Attend a Superbowl game
43. Dance in the rain
44. Learn to snowboard
45. Ride in a hot air balloon
46. Visit the Grand Canyon
47. Make a quilt
48. See a musical on Broadway
49. Change a tire
50. See an opera in the Sydney Opera House
51. Have my own personal library
52. Fly a kite
53. Go zorbing
54. See The Northern Lights
55. Collect the first 150 Pokemon (cards)
56. Get a manicure
57. Build a Habitat for Humanity home
58. Attend the Carnival of Venice
59. Spend a year living in another country
60. Learn to say "hello" in 50 languages
61. Backpack in the Australian outback
62. Swim with dolphins
63. Do a backflip (from the ground)
64. Grow a Bonsai tree
65. Learn a martial art
66. Keep chickens
67. Visit the Taj Mahal
68. Send a postcard to Post Secret
69. Go on a cruise
70. Create and watch a "100 Movies I Want to See" list
71. See the Kamakura Snow Festival in Japan
72. Fire a gun
73. Go whale-watching
74. Learn Spanish
75. Wear a "great hat" to the Kentucky Derby
76. Go to the Oktoberfest in Munich, Germany, with my dad
77. Keep bees
78. Visit a Renaissance fair
79. Learn to water ski
80. Learn how to tie a tie
81. Visit all 50 United States
82. Participate in La Tomatina in Brunol, Spain
83. Attend Fashion Week in New York
84. Knit a sweater
85. Vacation at Martha's Vineyard
86. Spend the night in a sleeper car on a train
87. Visit the Amazon rainforest
88. Make a paper-mache pinata
89. Take up tai chi
90. Learn to do a trick with a yo-yo
91. Sew myself an outfit (i.e., a dress)
92. Grow my hair out so it's long enough to properly braid
93. Sign up for (and finish) NaNoWriMo
94. Learn to sail
95. Learn guitar
96. Create a family tree
97. Participate in the Ivrea Orange Battle in Italy
98. Learn to tap dance
99. Write a song
100. Be in Rio de Janeiro for the Brazilian Carnival