Someday/maybe list

Selected items that are on my GTD someday/maybe list, which I'm reviewing because we're coming up on the end of a quarter:

• Repair seat in car
• Learn to play mandolin
• Learn to play ukulele
• Learn to play harmonica
• Take Chicago architecture tour
• Look into ways to prevent the interference from iPhone when you connected to 12v car adapter
• Dance lessons
• Look for Gasoline Alley comic strip for January 1st 1991 or so, featuring the new year playing a banjo
• Learn to shuffle cards
• Get screen protector for digital cameras
• Learn to play Cuban box drum
• Add Wachet Auf by Johann Sebastian Bach to my list of songs I want to learn on the banjo
• Learn to roll Rs
• Find a T-shirt that says, 1 fish, 2 fish, red fish, blue fish
• Research Sunni and Shiite differences
• Costume idea: Thanos playing the banjo with the Infinity Gauntlet
• Take more vocal lessons
• Vacation in Napier, New Zealand, the Art Deco capital of the world

Anyone got any someday/maybe items of their own?