The cheat pack mod allows you to switch between creative and survival mode, instant sight kill, when you look at something and it is auto-killed, as well as many other mods. This is a huge package of little mods and perks that you can add to Minecraft to enhance your Minecraft experience.
The ships and boats mod is a very fun mod. It is a lot like the Zeppelin Mod, which is a very popular mod in the Minecraft Community. You can add a control panel to a boat that you have built and can drive it around. The mod even simulates the bobbing of a boat from waves. If you add a water pump, you can submerge the ship and explore the underseas.