Bukkit

Gifts adds the ability to craft gifts that can be fully configured in the config.

Mini chests for your server!

HybridEssentials

FileManager allows you to browse and interact with files stored in your server without ftp access.

CraftEmoticons is a little and lightweight plugin that adds configurable emoticons to minecraft

An addon for ProtectionStones which allows selling protection blocks with signs aswell as checking for their lore.

CommandBlock can restrict commands in certain worlds, everywhere or assign permissions to plugins which don't support them.

iBlowUp can help you create explosions with your desired power, it can also be a fun plugin to play around with friends.

Paid2Sleep

HybridMonster