Wiring Block - Where Can I Find One?

[bigboi]

I have a question and I am a n00b on wiring so please be gentle on me...

I am starting to run into situations where I need to wire certain accessories under the hood to a postive and negative connection. In the past I would run the wires to the battery terminal posts, however this starts to look ugly and creates a "clutter" look.

Is there a wiring box or something I can use and mount out of sight in the engine compartment? Maybe something that accepts multiple terminal connections?

Any help or thoughts are appreciated... I know this is probably a simple thing... Thanks!