Here are a few simple little mods for Christmas time. They change your slide from the unlock arrow to a candy cane, stocking, bulb, or star and changes the words “Slide to Unlock” to “Merry Christmas”. The star & blub ones also have backgrounds. You can use a program like iFile or SSH in and change the text to make “Merry Christmas” say anything else if you’d like.
MiDarkTheme is a dark theme (obviously) that contains 36 icons, a dock, status bar, lockscreen background, wallpaper, SMS mod, Safari mod, Phone mod, pop-up mod, Calculator mod, badges, page dots… etc. Overall it is a decently designed theme. There are a few things that could be a little cleaner… like the Safari loading mod but overall it’s not too bad. You can get MiDarkTheme via the modmyi source. Note: There is no Stocks icon for this theme.