Bored at home is an awful situation for me, but I will have to go with:

1. Chocolate in the same room with me and in my line of vision.
2. Chocolate in the next room, not visible to me, but I know it's there.
3. Chocolate, not anywhere around me, not easily accessible, but I know of its existence in the universe and I know what it tastes like!

4. Certain specific chocolate items, like
Godiva Chocolate Raspberry Truffle ice cream
Chocolate-Banana milk shake
Chocolate "molten" or "lava" cake
Chocolate mousse
Mrs. Fields chocolate chip cookies