There's no way. but u can just put it behind a wall or under the floor
Yes. And Minecraft Beta 1.8 with crafting, furnaces, chests and stuff is called "Minecraft Beta" or "Survival Mode".
From dungeon chests
Just right click
Melons are not found in any biome. You can only find melon seeds in chests that the world generates itself. This includes dungeon chests, abandoned mineshaft chests, and stronghold chests.
You can't make it, you have to find it in dungeon chests.
If the still see the bubbles, they can. But do not hide it as the money they get is independent from your money.
Like the PC/Mac edition, I'm pretty sure you can only get saddles in chests that spawn randomly in the world, such as dungeon chests, abandoned mine shaft chests, and stronghold chests.
String is a common drop from Spider and mob traps
They can get into your ender chest, but they will not be able to see your items. Contents of Ender chests are private for all players.
The "too many items" mod jacks up chests. Turn it off, or accept the limitation.
Watermelon seeds can only be found in chests near or in mineshafts.
You cannot make horse armor in Minecraft. Instead, you need to find it in dungeon chests.