A bucket list is made up of things you want to do before you "kick the bucket," i.e. die. They can be funny, romantic, adventurous, educational - anything you want to do "some day."
I first heard the term in a movie by that name starring Jack Nicholson and Morgan Freeman, directed by Rob Reiner. It's about two terminally ill men who set out to accomplish everything on their lists.
I have a sort of running bucket list of cosmetic items I mean to try at least once to see if they really are as good as people say they are. That Matis eye cream and Cougar's T. LeClerc loose powder are on it.
Hey! This would be a good topic, wouldn't it?