I'll start: I've been wondering if there's a way that I can have my calendar and contacts on my computer and my phone without me having to input everything to both separately. Since I have Vista 64-bit, my computer won't sync with my phone, and it's been making me nervous knowing I don't have a backup in case my phone is lost or broken.
Last night it came to me! An online calendar and contacts program! So, I went looking about and found that someone has come up with a program that will sync my Google calendar with my phone's calendar online. And there is a feature for contacts, too!
Now, I have both the calendar on my phone and my computer up-to-date with each other and I needn't worry that I will lose all my information if my phone goes down.

Not a bit deal, but a simple pleasure.