Best way to hook up multiple things direct to battery

Having some issues with my cb and from what I've read it may help running it direct to the battery pos/neg terminals,I also want to hook up a amp for a sub and there is bound to be other things in the future.

What's the best way to do it? Is there so e kind of fitting I can replace the terminal connectors with the have space for an extra wire? Worth fitting a fuse box at the same time?

Cheers

POSITIVE AND NEGATIVE BATTERY TERMINAL CLAMPS WITH 3 BOLT ON CONNECTIONS | eBay

you can get battery terminals with extra posts on as above as an amp will need to be wired direct, but if you are planning on running a lot of extras then one of the posts could be used for a feed to a seperate fuse box to take the wiring away from the battery

Car Battery Connection Clamp + Pol Nickel Finish | eBay
or a different alternative

or be a pikey and drill some holes in a metal bar and use nuts and bolts to extend it

Just what I was looking for cheers