One thing I have knocked off my bucket list is skydiving!
I did it a few years back in Hawaii with my cousin, and I highly recommend it! It is such a thrill and not at all what I expected.
We went tandem of course, and my guy jumped out of the plane with my backwards and immediately did flips, it was awesome! Such a rush. I expected to lose my stomach but you don't. You feel extreme amounts wind or air hitting you, and then when the cord is pulled it is just a peaceful descent back to earth, and oh what a beautiful view it was in Hawaii. The closest I will ever feel to flying for sure.
If you have the nerve, you should definitely try it once in your life!