I'd been putting off upgrading my iPhone to iOS 5.1 because there isn't an untethered jailbreak for it yet... but after watching out for how often I actually turn my phone off (hardly ever), I decided a "tethered" jailbreak would be good enough for me.

I wanted to give my phone a "minimalist", "clean" feel, and I think I achieved that rather easily with only a few tweaks:

     Here's how I did it: (these are all apps/tweaks inside "Cydia", apart from the wallpaper obviously)

1. FakeCarrier - lets you display text other than your cellular network provider (creates an app icon, where you configure it)
2. iSlideText - lets you display text other than "Slide to unlock" on the lock screen (double-tap on the "Slide to unlock" text when the phone's locked, to set)
3. No Icon Label for iOS5 - removes the lables of icons
4. No Icon Shadows - removes shadows from icons
5. SpotRemover - removes the "Spotlight" screen
6. the wallpaper