Mud: Acts like snowballs and can be found in swamps!
Breaker:Can destroy the block placed next to it and drops the item!
Can be used in cobblestone farming or etc!
Pipes:Can be used to transport items from one place to another!
Dispenser should be able to place seeds
More types of temples with trapped chest traps and etc!
Mudballs:Can be thrown like snowballs
Penguin meat:Used as food and obtained by penguins!
Penguins:Found in ice plains and can slide on ice!
Thats only the start,i still have more ideas coming soon!